無法登入： 由於內嵌瀏覽器的限制，Google不允許在此環境中進行登入。
Unable to sign in: Due to in-app browser limitations, Google doesn't allow authentication in this environment.
點擊右上角的選單按鈕
通常顯示為三個點 ⋯ 或三條線 ☰
Tap the menu button in the top right corner (usually shown as ⋯ or ☰)
選擇「在瀏覽器中開啟」選項
Select "Open in browser" option
在外部瀏覽器中完成登入流程
網頁將在您的預設瀏覽器中打開，您可以正常登入
Complete the sign-in process in your external browser
Google的安全政策限制了某些內嵌瀏覽器（如LINE、Facebook等）進行OAuth身份驗證，以防止潛在的釣魚攻擊和保護用戶帳戶安全。 這個錯誤代碼 403: disallowed_useragent 表示Google已識別並阻止了內嵌瀏覽器的登入嘗試。
Google's security policy restricts OAuth authentication in certain in-app browsers (like LINE, Facebook, etc.) to prevent potential phishing attacks and protect user accounts. The error code 403: disallowed_useragent indicates that Google has identified and blocked the in-app browser's login attempt.