basic account 2fa problem

I have a basic account.  I tried to log on and it prompted me to create a 2fa code (which I already had).  I did this, and now my new 2fa does not work, and I cannot log onto my old basic account.  Zoom will let me reset my password, but not my 2fa.  I created a new basic account to post this question.  How do I delete my old basic account and switch to the new?