I stopped other 3rd party authenticator apps I kept using Google Authenticator which doesn't ask for a phone number or email you can use it without them just make sure you separately save your backup codes to a safe place so that you can use them in other app or use it for recovery purposes.

Authy is not the best authenticator since before their data always got breached and it isn't safe anymore to use in any exchange accounts.
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I will prefer not to use any authenticator that encourages online backup like Authy like I have said before. The authenticator is as bad as Google authenticator which is also encouraging users data backup.