Possible causes: caps lock, wrong keyboard layout, password manager inserting an old entry. Try resetting password via the official "Forgot password" flow if needed.
Check network connectivity, device time settings, or carrier issues. If you use an authenticator app, ensure the device clock is synced. Use backup codes if available.
Use backup codes, email recovery options, or the platform’s identity verification procedures. Always store backup codes in a secure location.
Yes—use official support pages and avoid unknown links. Bookmark official resources so you don’t click spoof links.