Do not immediately assume the worker is broken. Repeated auth failures usually start with the account itself. Check whether credentials are missing, revoked, or simply out of date.
Open the affected account in the Accounts area.
Review the last credential check and account error state.
Update the stored password or provider credentials before re-enabling.
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Escalation threshold
Escalate after you have verified the credentials, the provider settings, and the workspace activity state. Include that verification in the support request so the ticket does not bounce back for basic repro details.
Mention when the account last worked correctly.
Mention whether the failure started after a provider-side policy change.
Use billing/contact routing only if the root issue is account access policy, not mailbox configuration.