We started ramping mandatory two-step verification from 10/2/2023 to 10/23/2023 which inadvertently removed third party applications from the members profile settings; revoking three legged OAuth tokens for the member. Developers may have seen an increase in 401 REVOKED_ACCESS_TOKEN errors during this time. We have since paused this ramp. Members who enabled two-step verification during this time will need to re-authenticate in any third party application.