We have confirmed the issue is now resolved with multiple customers. If anyone is still facing issues we'd recommend to create a new user session. We will share a full incident report once our internal investigation will complete.

Our engineering team have deployed a patch and are verifying the fix right now.

We’re noticing an increase in login-related issues from mobile apps. This appears to be a regression caused by a failed fix attempt for an incident we resolved yesterday. All relevant engineers are investigating this with the highest priority. We apologize for the inconvenience and will share a full incident report later.