Can you try the following ?
- Use Chrome on a PC
- Log out from all Animate 3D accounts
- As shown in the attached screenshot, go to Settings and Clear browsing data
- Close all Chrome window
- Open a new Incognito Chrome window
- Login Animate-3D again and re-try
- If it fails, repeat 2-6 one more time
- If it still fails, try a different browser or Computer. Also right click the Chrome window and select "Inspect" and send us the potential errors from the debug console.