diff --git a/CHANGELOG.md b/CHANGELOG.md
index 138f19a4ac..0af5b3ab44 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,28 @@
 
 -->
 
+## 12.x.x (unreleased)
+
+### Improvements
+
+### Bugfixes
+- CWを維持する設定を復活
+
+## 12.89.2 (2021/08/24)
+
+### Bugfixes
+- カスタムCSSを有効にしているとエラーになる問題を修正
+
+## 12.89.1 (2021/08/24)
+
+### Improvements
+- クライアントのデザインの調整
+
+### Bugfixes
+- 翻訳でDeepLのProアカウントに対応していない問題を修正
+- インスタンス設定でDeepLのAuth Keyが空で表示される問題を修正
+- セキュリティの向上
+
 ## 12.89.0 (2021/08/21)
 
 ### Improvements
diff --git a/locales/de-DE.yml b/locales/de-DE.yml
index 0fcfc9b46a..1afc8fab48 100644
--- a/locales/de-DE.yml
+++ b/locales/de-DE.yml
@@ -778,6 +778,7 @@ whatIsNew: "Änderungen anzeigen"
 translate: "Übersetzen"
 translatedFrom: "Aus {x} übersetzt"
 accountDeletionInProgress: "Löschung des Benutzerkontos momentan in Bearbeitung"
+usernameInfo: "Ein Name, durch den dein Benutzerkonto auf diesem Server identifiziert werden kann. Du kannst das Alphabet (a~z, A~Z), Ziffern (0~9) oder Unterstriche (_) verwenden. Benutzernamen können später nicht geändert werden."
 _accountDelete:
   accountDelete: "Benutzerkonto löschen"
   mayTakeTime: "Da die Löschung eines Benutzerkontos ein aufwendiger Prozess ist, kann dessen Dauer davon abhängen, wie viel Inhalt in diesem erstellt wurde oder wie viele Dateien hochgeladen wurden."
diff --git a/locales/en-US.yml b/locales/en-US.yml
index cf82a8cd73..5a0ebd366c 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -778,6 +778,8 @@ whatIsNew: "Show changes"
 translate: "Translate"
 translatedFrom: "Translated from {x}"
 accountDeletionInProgress: "Account deletion is currently in progress"
+usernameInfo: "A name that identifies your account from others on this server.  You can use the alphabet (a~z, A~Z), digits (0~9) or underscores (_). Usernames can not be changed later."
+keepCw: "Keep Content Warning"
 _accountDelete:
   accountDelete: "Delete Account"
   mayTakeTime: "As account deletion is a resource-heavy process, it may take some time to complete depending on how much content you have created and how many files you have uploaded."
diff --git a/locales/eo-UY.yml b/locales/eo-UY.yml
index bb141a692c..4d435512b8 100644
--- a/locales/eo-UY.yml
+++ b/locales/eo-UY.yml
@@ -73,6 +73,7 @@ following: "Sekvatoj"
 followers: "Sekvantoj"
 followsYou: "Sekvas vin"
 createList: "Kreii liston"
+manageLists: "Administri liston"
 error: "Eraro"
 somethingHappened: "Problemo okazis."
 retry: "Reprovi"
@@ -188,7 +189,7 @@ fromUrl: "De URL"
 uploadFromUrl: "Alŝuti de URL"
 uploadFromUrlDescription: "URL de la dosiero kiun vi volas alŝuti"
 explore: "Esplori"
-games: "Ludoj sur Misskey"
+games: "Miskiaj Ludoj"
 messageRead: "Legita"
 startMessaging: "Komenci babiladon"
 nUsersRead: "Legita de {n} homoj"
@@ -245,6 +246,7 @@ yearX: "La jaro {year}"
 pages: "Paĝoj"
 connectService: "Konekti"
 disconnectService: "Farkonektiĝi"
+enableLocalTimeline: "Ebligi lokan templinion"
 enableGlobalTimeline: "Ebligi mallokan templinion"
 registration: "Registri"
 driveCapacityPerLocalAccount: "Volumo de disko po unu loka uzanto"
@@ -257,6 +259,7 @@ pinnedUsers: "Alpinglita uzanto"
 pinnedPages: "Alpinglitaj paĝoj"
 pinnedNotes: "Pinglita noto"
 antennas: "Antenoj"
+manageAntennas: "Administri antenojn"
 name: "Nomo"
 withFileAntenna: "Nur kun aldonaĵo"
 withReplies: "Inkluzive respondoj"
@@ -342,6 +345,7 @@ poll: "Balotujo"
 useCw: "Kaŝi enhavo"
 themeEditor: "Redaktilo de koloraroj"
 author: "Aŭtoro"
+manage: "Administro"
 plugins: "Kromaĵoj"
 deck: "Kartaro"
 medium: "Meza"
@@ -424,6 +428,7 @@ offline: "Forkonektita"
 instanceBlocking: "Blokado de ekzemplo"
 selectAccount: "Elekti konton"
 user: "Uzanto"
+administration: "Administro"
 accounts: "Kontoj"
 high: "Alta"
 middle: "Meza"
@@ -440,6 +445,7 @@ translatedFrom: "Tradukita el {x}"
 _docs:
   continueReading: "Legi plu"
   features: "Funkcioj"
+  admin: "Administro"
 _gallery:
   liked: "Ŝatitaj notoj"
   like: "Ŝati"
@@ -448,6 +454,9 @@ _email:
     title: "Vi estas eksekvita"
   _receiveFollowRequest:
     title: "Vi ricevis peton de sekvado"
+_plugin:
+  install: "Instali kromaĵon"
+  manage: "Administri kromaĵojn"
 _registry:
   key: "Ŝlosilo"
   keys: "Ŝlosiloj"
@@ -461,6 +470,7 @@ _aboutMisskey:
   translation: "Traduki Misskey'on"
   patrons: "Mecenatoj"
 _mfm:
+  dummy: "Misskey vastigas la mondon de Fediverso"
   mention: "Mencioj"
   hashtag: "Kradvorto"
   url: "URL"
@@ -488,6 +498,7 @@ _instanceTicker:
 _channel:
   create: "Krei kanalon"
   edit: "Redakti kanalon"
+  owned: "Posedaĵo"
   following: "Sekvante"
   usersCount: "{n} partoprenanto(j)"
 _menuDisplay:
@@ -496,6 +507,7 @@ _wordMute:
   muteWords: "Kaŝigitaj vortoj"
   mutedNotes: "Silentigataj notoj"
 _theme:
+  manage: "Administri kolorarojn"
   code: "Kodo de koloraro"
   darken: "Malbrileco"
   lighten: "Brileco"
@@ -612,10 +624,10 @@ _charts:
   federationInstancesTotal: "Tuta numero de kunfederantaj ekzemploj"
   filesTotal: "Tuta numero de dosieroj"
 _timelines:
-  home: "Hejmo"
-  local: "Loka"
-  social: "Sociala"
-  global: "Malloka"
+  home: "HEJMO"
+  local: "LOKA"
+  social: "SOCIALA"
+  global: "MALLOKA"
 _rooms:
   translate: "Movi"
   chooseImage: "Elekti bildon"
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index a20b40607b..4b712c815f 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -778,6 +778,8 @@ whatIsNew: "更新情報を見る"
 translate: "翻訳"
 translatedFrom: "{x}から翻訳"
 accountDeletionInProgress: "アカウントの削除が進行中です"
+usernameInfo: "サーバー上であなたのアカウントを一意に識別するための名前。アルファベット(a~z, A~Z)、数字(0~9)、およびアンダーバー(_)が使用できます。ユーザー名は後から変更することは出来ません。"
+keepCw: "CWを維持する"
 
 _accountDelete:
   accountDelete: "アカウントの削除"
diff --git a/locales/ko-KR.yml b/locales/ko-KR.yml
index 99fc0ba6f0..43e01fc2c4 100644
--- a/locales/ko-KR.yml
+++ b/locales/ko-KR.yml
@@ -777,6 +777,15 @@ misskeyUpdated: "Misskey가 업데이트 되었습니다!"
 whatIsNew: "패치 정보 보기"
 translate: "번역"
 translatedFrom: "{x}에서 번역"
+accountDeletionInProgress: "계정 삭제 작업을 진행하고 있습니다"
+usernameInfo: "서버상에서 계정을 식별하기 위한 이름. 알파벳(a~z, A~Z), 숫자(0~9) 및 언더바(_)를 사용할 수 있습니다. 사용자명은 나중에 변경할 수 없습니다."
+_accountDelete:
+  accountDelete: "계정 삭제"
+  mayTakeTime: "계정 삭제는 서버에 부하를 가하기 때문에, 작성한 콘텐츠나 업로드한 파일의 수가 많으면 완료까지 시간이 걸릴 수 있습니다."
+  sendEmail: "계정 삭제가 완료되면 등록된 이메일 주소로 알림을 보냅니다."
+  requestAccountDelete: "계정 삭제 요청"
+  started: "삭제 작업이 시작되었습니다."
+  inProgress: "삭제 진행 중"
 _docs:
   continueReading: "계속 읽기"
   features: "기능"
diff --git a/locales/zh-CN.yml b/locales/zh-CN.yml
index aad08d1b4b..7dad6232be 100644
--- a/locales/zh-CN.yml
+++ b/locales/zh-CN.yml
@@ -777,6 +777,11 @@ misskeyUpdated: "Misskey更新完成！"
 whatIsNew: "显示更新信息"
 translate: "翻译"
 translatedFrom: "从 {x} 翻译"
+accountDeletionInProgress: "正在删除账户"
+usernameInfo: "在服务器上唯一标识您的帐户的名称。您可以使用字母 (a ~ z, A ~ Z)、数字 (0 ~ 9) 和下划线 (_)。用户名以后不能更改。"
+_accountDelete:
+  accountDelete: "删除帐户"
+  inProgress: "正在删除"
 _docs:
   continueReading: "继续阅读"
   features: "特性"
diff --git a/migration/1629778475000-deepl-integration2.ts b/migration/1629778475000-deepl-integration2.ts
new file mode 100644
index 0000000000..67e5ea02ae
--- /dev/null
+++ b/migration/1629778475000-deepl-integration2.ts
@@ -0,0 +1,14 @@
+import {MigrationInterface, QueryRunner} from "typeorm";
+
+export class deeplIntegration21629778475000 implements MigrationInterface {
+    name = 'deeplIntegration21629778475000'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "meta" ADD "deeplIsPro" boolean NOT NULL DEFAULT false`);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "meta" DROP COLUMN "deeplIsPro"`);
+    }
+
+}
diff --git a/package.json b/package.json
index 7754fb9281..1f9baa3ca2 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "misskey",
 	"author": "syuilo <syuilotan@yahoo.co.jp>",
-	"version": "12.89.0",
+	"version": "12.89.2",
 	"codename": "indigo",
 	"repository": {
 		"type": "git",
diff --git a/src/client/components/signup.vue b/src/client/components/signup.vue
index b0b0c2ad4d..d584b97209 100644
--- a/src/client/components/signup.vue
+++ b/src/client/components/signup.vue
@@ -1,12 +1,12 @@
 <template>
-<form class="mk-signup" @submit.prevent="onSubmit" :autocomplete="Math.random()">
+<form class="qlvuhzng" @submit.prevent="onSubmit" :autocomplete="Math.random()">
 	<template v-if="meta">
-		<MkInput v-if="meta.disableRegistration" v-model="invitationCode" type="text" :autocomplete="Math.random()" spellcheck="false" required>
+		<MkInput class="_inputNoTopMargin" v-if="meta.disableRegistration" v-model="invitationCode" type="text" :autocomplete="Math.random()" spellcheck="false" required>
 			<template #label>{{ $ts.invitationCode }}</template>
 			<template #prefix><i class="fas fa-key"></i></template>
 		</MkInput>
-		<MkInput v-model="username" type="text" pattern="^[a-zA-Z0-9_]{1,20}$" :autocomplete="Math.random()" spellcheck="false" required @update:modelValue="onChangeUsername" data-cy-signup-username>
-			<template #label>{{ $ts.username }}</template>
+		<MkInput class="_inputNoTopMargin" v-model="username" type="text" pattern="^[a-zA-Z0-9_]{1,20}$" :autocomplete="Math.random()" spellcheck="false" required @update:modelValue="onChangeUsername" data-cy-signup-username>
+			<template #label>{{ $ts.username }} <div class="_button _help" v-tooltip:dialog="$ts.usernameInfo"><i class="far fa-question-circle"></i></div></template>
 			<template #prefix>@</template>
 			<template #suffix>@{{ host }}</template>
 			<template #caption>
@@ -204,7 +204,7 @@ export default defineComponent({
 </script>
 
 <style lang="scss" scoped>
-.mk-signup {
+.qlvuhzng {
 	.captcha {
 		margin: 16px 0;
 	}
diff --git a/src/client/directives/tooltip.ts b/src/client/directives/tooltip.ts
index 90247eacb2..ee690558af 100644
--- a/src/client/directives/tooltip.ts
+++ b/src/client/directives/tooltip.ts
@@ -1,6 +1,6 @@
 import { Directive, ref } from 'vue';
 import { isDeviceTouch } from '@client/scripts/is-device-touch';
-import { popup } from '@client/os';
+import { popup, dialog } from '@client/os';
 
 const start = isDeviceTouch ? 'touchstart' : 'mouseover';
 const end = isDeviceTouch ? 'touchend' : 'mouseleave';
@@ -24,6 +24,18 @@ export default {
 			}
 		};
 
+		if (binding.arg === 'dialog') {
+			el.addEventListener('click', (ev) => {
+				ev.preventDefault();
+				ev.stopPropagation();
+				dialog({
+					type: 'info',
+					text: binding.value,
+				});
+				return false;
+			});
+		}
+
 		const show = e => {
 			if (!document.body.contains(el)) return;
 			if (self._close) return;
diff --git a/src/client/init.ts b/src/client/init.ts
index 8ad7eada1a..29f96e2f7e 100644
--- a/src/client/init.ts
+++ b/src/client/init.ts
@@ -103,15 +103,12 @@ window.addEventListener('resize', () => {
 });
 //#endregion
 
-// Get the <head> element
-const head = document.getElementsByTagName('head')[0];
-
 // If mobile, insert the viewport meta tag
 if (isMobile || window.innerWidth <= 1024) {
 	const viewport = document.getElementsByName('viewport').item(0);
 	viewport.setAttribute('content',
 		`${viewport.getAttribute('content')},minimum-scale=1,maximum-scale=1,user-scalable=no`);
-	head.appendChild(viewport);
+	document.head.appendChild(viewport);
 }
 
 //#region Set lang attr
diff --git a/src/client/os.ts b/src/client/os.ts
index 284f982f06..8125332798 100644
--- a/src/client/os.ts
+++ b/src/client/os.ts
@@ -214,7 +214,11 @@ export function modalPageWindow(path: string) {
 	}, {}, 'closed');
 }
 
-export function dialog(props: Record<string, any>) {
+export function dialog(props: {
+	type: 'error' | 'info' | 'success' | 'warning' | 'waiting';
+	title?: string | null;
+	text?: string | null;
+}) {
 	return new Promise((resolve, reject) => {
 		popup(import('@client/components/dialog.vue'), props, {
 			done: result => {
diff --git a/src/client/pages/about-misskey.vue b/src/client/pages/about-misskey.vue
index a324ebce5c..384c7e8ccb 100644
--- a/src/client/pages/about-misskey.vue
+++ b/src/client/pages/about-misskey.vue
@@ -60,7 +60,7 @@ import FormBase from '@client/components/form/base.vue';
 import FormGroup from '@client/components/form/group.vue';
 import FormKeyValueView from '@client/components/form/key-value-view.vue';
 import MkLink from '@client/components/link.vue';
-import { physics } from '@client/scripts/physics.ts';
+import { physics } from '@client/scripts/physics';
 import * as symbols from '@client/symbols';
 
 const patrons = [
diff --git a/src/client/pages/instance/other-settings.vue b/src/client/pages/instance/other-settings.vue
index 8002528931..4fa80b2b2c 100644
--- a/src/client/pages/instance/other-settings.vue
+++ b/src/client/pages/instance/other-settings.vue
@@ -12,6 +12,9 @@
 				<template #prefix><i class="fas fa-key"></i></template>
 				DeepL Auth Key
 			</FormInput>
+			<FormSwitch v-model:value="deeplIsPro">
+				Pro account
+			</FormSwitch>
 		</FormGroup>
 		<FormButton @click="save" primary><i class="fas fa-save"></i> {{ $ts.save }}</FormButton>
 	</FormSuspense>
@@ -50,6 +53,7 @@ export default defineComponent({
 			},
 			summalyProxy: '',
 			deeplAuthKey: '',
+			deeplIsPro: false,
 		}
 	},
 
@@ -62,11 +66,13 @@ export default defineComponent({
 			const meta = await os.api('meta', { detail: true });
 			this.summalyProxy = meta.summalyProxy;
 			this.deeplAuthKey = meta.deeplAuthKey;
+			this.deeplIsPro = meta.deeplIsPro;
 		},
 		save() {
 			os.apiWithDialog('admin/update-meta', {
 				summalyProxy: this.summalyProxy,
 				deeplAuthKey: this.deeplAuthKey,
+				deeplIsPro: this.deeplIsPro,
 			}).then(() => {
 				fetchInstance();
 			});
diff --git a/src/client/pages/settings/privacy.vue b/src/client/pages/settings/privacy.vue
index 4095e744c2..46d8c17ca2 100644
--- a/src/client/pages/settings/privacy.vue
+++ b/src/client/pages/settings/privacy.vue
@@ -28,6 +28,7 @@
 		</FormSelect>
 		<FormSwitch v-model:value="defaultNoteLocalOnly">{{ $ts._visibility.localOnly }}</FormSwitch>
 	</FormGroup>
+	<FormSwitch v-model:value="keepCw" @update:value="save()">{{ $ts.keepCw }}</FormSwitch>
 </FormBase>
 </template>
 
@@ -69,6 +70,7 @@ export default defineComponent({
 		defaultNoteVisibility: defaultStore.makeGetterSetter('defaultNoteVisibility'),
 		defaultNoteLocalOnly: defaultStore.makeGetterSetter('defaultNoteLocalOnly'),
 		rememberNoteVisibility: defaultStore.makeGetterSetter('rememberNoteVisibility'),
+		keepCw: defaultStore.makeGetterSetter('keepCw'),
 	},
 
 	created() {
diff --git a/src/client/style.scss b/src/client/style.scss
index a6c027745a..269cf88939 100644
--- a/src/client/style.scss
+++ b/src/client/style.scss
@@ -156,8 +156,10 @@ hr {
 
 ._button {
 	appearance: none;
+	display: inline-block;
 	padding: 0;
 	margin: 0; // for Safari
+	width: max-content;
 	background: none;
 	border: none;
 	cursor: pointer;
@@ -201,6 +203,11 @@ hr {
 	}
 }
 
+._help {
+	color: var(--accent);
+	cursor: help
+}
+
 ._textButton {
 	@extend ._button;
 	color: var(--accent);
diff --git a/src/docs/eo-UY/advanced/create-plugin.md b/src/docs/eo-UY/advanced/create-plugin.md
index 0d2fa19178..2a5af72917 100644
--- a/src/docs/eo-UY/advanced/create-plugin.md
+++ b/src/docs/eo-UY/advanced/create-plugin.md
@@ -5,7 +5,7 @@ Misskey Webクライアントのプラグイン機能を使うと、クライア
 プラグインは、AiScriptのメタデータ埋め込み機能を使って、デフォルトとしてプラグインのメタデータを定義する必要があります。 メタデータは次のプロパティを含むオブジェクトです。
 
 ### name
-プラグイン名
+Nomo de kromaĵo
 
 ### author
 プラグイン作者
diff --git a/src/models/entities/meta.ts b/src/models/entities/meta.ts
index 2a0632c87c..6428aacdf1 100644
--- a/src/models/entities/meta.ts
+++ b/src/models/entities/meta.ts
@@ -319,6 +319,11 @@ export class Meta {
 	})
 	public deeplAuthKey: string | null;
 
+	@Column('boolean', {
+		default: false,
+	})
+	public deeplIsPro: boolean;
+
 	@Column('varchar', {
 		length: 512,
 		nullable: true
diff --git a/src/server/api/endpoints/admin/update-meta.ts b/src/server/api/endpoints/admin/update-meta.ts
index 5962dba98a..46f30fef7d 100644
--- a/src/server/api/endpoints/admin/update-meta.ts
+++ b/src/server/api/endpoints/admin/update-meta.ts
@@ -149,6 +149,10 @@ export const meta = {
 			validator: $.optional.nullable.str,
 		},
 
+		deeplIsPro: {
+			validator: $.optional.bool,
+		},
+
 		enableTwitterIntegration: {
 			validator: $.optional.bool,
 		},
@@ -574,6 +578,10 @@ export default define(meta, async (ps, me) => {
 		}
 	}
 
+	if (ps.deeplIsPro !== undefined) {
+		set.deeplIsPro = ps.deeplIsPro;
+	}
+
 	await getConnection().transaction(async transactionalEntityManager => {
 		const meta = await transactionalEntityManager.findOne(Meta, {
 			order: {
diff --git a/src/server/api/endpoints/meta.ts b/src/server/api/endpoints/meta.ts
index 1c87952f6a..3f422dff07 100644
--- a/src/server/api/endpoints/meta.ts
+++ b/src/server/api/endpoints/meta.ts
@@ -583,6 +583,8 @@ export default define(meta, async (ps, me) => {
 			response.objectStorageUseProxy = instance.objectStorageUseProxy;
 			response.objectStorageSetPublicRead = instance.objectStorageSetPublicRead;
 			response.objectStorageS3ForcePathStyle = instance.objectStorageS3ForcePathStyle;
+			response.deeplAuthKey = instance.deeplAuthKey;
+			response.deeplIsPro = instance.deeplIsPro;
 		}
 	}
 
diff --git a/src/server/api/endpoints/notes/translate.ts b/src/server/api/endpoints/notes/translate.ts
index a5fdf70ce6..e4bc6bb060 100644
--- a/src/server/api/endpoints/notes/translate.ts
+++ b/src/server/api/endpoints/notes/translate.ts
@@ -61,7 +61,9 @@ export default define(meta, async (ps, user) => {
 	params.append('text', note.text);
 	params.append('target_lang', targetLang);
 
-	const res = await fetch('https://api-free.deepl.com/v2/translate', {
+	const endpoint = instance.deeplIsPro ? 'https://api.deepl.com/v2/translate' : 'https://api-free.deepl.com/v2/translate';
+
+	const res = await fetch(endpoint, {
 		method: 'POST',
 		headers: {
 			'Content-Type': 'application/x-www-form-urlencoded',
diff --git a/src/server/file/index.ts b/src/server/file/index.ts
index 9b5d8f7267..a455acd1cf 100644
--- a/src/server/file/index.ts
+++ b/src/server/file/index.ts
@@ -17,6 +17,10 @@ const _dirname = dirname(_filename);
 // Init app
 const app = new Koa();
 app.use(cors());
+app.use(async (ctx, next) => {
+	ctx.set('Content-Security-Policy', `default-src 'none'; style-src 'unsafe-inline'`);
+	await next();
+});
 
 // Init router
 const router = new Router();
diff --git a/src/server/proxy/index.ts b/src/server/proxy/index.ts
index 9ef198d31b..b8993f19f8 100644
--- a/src/server/proxy/index.ts
+++ b/src/server/proxy/index.ts
@@ -10,6 +10,10 @@ import { proxyMedia } from './proxy-media';
 // Init app
 const app = new Koa();
 app.use(cors());
+app.use(async (ctx, next) => {
+	ctx.set('Content-Security-Policy', `default-src 'none'; style-src 'unsafe-inline'`);
+	await next();
+});
 
 // Init router
 const router = new Router();
diff --git a/src/server/web/boot.js b/src/server/web/boot.js
index e2fd137f95..a3a0685669 100644
--- a/src/server/web/boot.js
+++ b/src/server/web/boot.js
@@ -60,8 +60,6 @@
 		? `?salt=${localStorage.getItem('salt')}`
 		: '';
 
-	const head = document.getElementsByTagName('head')[0];
-
 	const script = document.createElement('script');
 	script.setAttribute('src', `/assets/app.${v}.js${salt}`);
 	script.setAttribute('async', 'true');
@@ -70,7 +68,7 @@
 		renderError('APP_FETCH_FAILED');
 		checkUpdate();
 	});
-	head.appendChild(script);
+	document.head.appendChild(script);
 	//#endregion
 
 	//#region Theme
@@ -111,7 +109,7 @@
 	if (customCss && customCss.length > 0) {
 		const style = document.createElement('style');
 		style.innerHTML = customCss;
-		head.appendChild(style);
+		document.head.appendChild(style);
 	}
 
 	// eslint-disable-next-line no-inner-declarations