A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hi all. I have been having the same issue and have found a resolution. On your device with the broken back up but working authenticator, select add account, select Microsoft account, sign into the account you use to back up your Authenticator and sign in, once done try the toggle to turn your back up on, you will find your credentials screen appears and the back up now works again. Hope this helps others too.