If you can not receive the SMS authentication code, it is recommended that you change the security item according to Security Settings Change Guidelines to ensure your normal use.
Kennwort sicher aufbewahren um Google-Authenticator erneut einzustellen--
① Click the [+] of your GA app and scan the QR code below or enter the token.
② Bind the new key in the GA app and enter the new GA code in the website.
③ Then verify the SMS code, email code, the original GA code that are linked to your account and complete the replacement of GA.