A root-cause analysis for this issue has been performed and is now available at https://cdn.auth0.com/blog/20210512-Incident-RCA.pdf
The incident has been resolved. We apologize for the disruption of service. We will provide our customers with a detailed Root Cause Analysis (RCA) within the next 14 days or sooner.
Our Engineering teams have provided a fix and Auth0 services in our EU environment are fully operational.
As of 17:22 UTC, we have identified issues in our EU environment, which is preventing end-users from logging in. Our Engineering teams have isolated the issue and are working on providing a fix.