Yeah, it’s unfortunate a lot of new users are experiencing this. There are several issues with account registration/login, all resulting in the spinning icon of doom.
- Mobile browsers sometimes append a space after your username into the field
- Having any - (dashes) in your password
- Your password being too long
- The username already is in use
- Server load at the time is too high
What you can try is:
- After you register, even if you get the spinning icon of doom, try to log in. Sometimes it just works!
- If that didn’t work, try the reset password flow. Put your email address into the username field and click the forgot password link
I’ve found the reset password flow to fix my user when I have login issues.