Hi @agarcia,
Have you been able to solve the issue?
The issue is not resolved for us as well but at last we have identified what caused and have a temporary fix in place. Our server was not getting the response for /index.php?a0_action=migration-ws-get-user endpoint because Cloudflare, used by our hosting WP Engine, was preventing the request to go through. And apparently the reason for that is the request doesn’t have any User Agent information. We’re able to add an exclusion rule for 90 days and postpone the problem but the time is running out.
I’ve created an issue here. Auth0 needs to help us figure out a solution here.