We are very sorry for the continued disruption. We want to re-iterate that this should not be affecting the core API and the services built upon it. This only affects the ability to log into the Playground site. We are still monitoring ongoing work from our authentication vendor. Please continue to follow along here: https://status.auth0.com
Unfortunately, given how tightly integrated our authentication system is, and how critical it is to the security of our system we do not have a clear path to temporarily work around this issue.