Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi,
The account does not disappear randomly on its own - if you configured it, which you must have done previously.
- May I know whether there was an app uninstall or a reinstall?
- Did you recently factory reset your device?
You may want to restore the account if there was an existing backup:
Please note that if you uninstall and reinstall authenticator, your existing accounts might be lost, if they were not a part of backup.
I look forward to hearing from you to get the results of the troubleshooting.