This article provides a resolution for the error "The service is temporarily unavailable. Try again later." The error occurs due to a temporary mobile device connection issue or a problem with the connection path to the registered Salesforce Authenticator account.
Try the following steps:
Wait for a while and try again.
Restart your mobile device.
Log in using the 6-digit verification code displayed on Salesforce Authenticator.
Use Salesforce Authenticator TOTP Codes If You’re Offline or Push Notifications Are Unavailable
If the issue is not resolved, log in using the 6-digit verification code, and then re-register the Salesforce Authenticator by disconnecting and registering it again, following the procedures in the pages below:
Common multi-factor authentication (MFA) troubleshooting
How to Set Up Salesforce Authenticator (Version 4.4.0 or Later) for MFA
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