Bottom line is you somehow got logged off of X, and now you have to log back in. When logging in do not use Continue with phone, Continue with Apple, or Continue with Google. Login with email or username here:
https://x.com/i/jf/onboarding/web?mode=login&redirect_after_login
Didn’t work, there was no way to log in that I could see. I’ll try again...
Nope, no way to log in, no way to continue with anything. I sorta give up.