Identified - Starting at approximately 9:00AM ET (14:00 UTC) MongoDB Cloud users with additional login authentication layers (Legacy 2FA, MFA) backed by SMS have been experiencing errors logging into their MongoDB portal account. Our upstream integration provider is investigating service availability of this platform.

Workarounds:
Legacy 2FA users may use our self service reset tool at https://account.mongodb.com/account/reset/mfa/atlas to disable Legacy 2FA, and opt-in to MFA services which allow additional means of verification.
Impacted MFA users can open a live chat with our support team for manual verification to disable MFA via SMS.
Feb 26, 16:48 UTC