A root-cause analysis for this issue has been performed and is now available at https://cdn.auth0.com/blog/20210107-3-Incident-RCA.pdf
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are investigating reports of newly registered users not showing up in user search (in Auth0 Dashboard or via Management API). While a marginal delay between user registration and user indexing is expected, we are investigating increased indexing delays. User authentication is not affected, users are able to register and log in.