Cannot find my account


For almost 24 hours now I have not been able to log into my account. My username looks as though it’s been disabled or deleted as I don’t appear on the search.
They have sent me a code to my mobile to log back in but the code doesn’t appear to work and freezes on the screen. I’ve no idea what’s happened and it’s sooo annoying!
Can anyone help?

System Configuration: iPhone / Safari 14.1.2