It sounds like your login issue may be related to a blocked account or a backend session problem.
Please contact support and request that your account be checked and, if necessary, unblocked via Dodgeball. If your account is not blocked, ask for your issue to be escalated for backend investigation, as per the internal process described in the documentation.
This is the recommended next step for persistent login problems with a neverending loading screen.
Source:
- [Login Issues & Internal Process Documentation](
https://docs.google.com/document/d/1X1UzOVUrma47typ4RnohwConQu9gH26iYz9wpZvDXO0/edit?usp=drivesdk)