Its a different site I am having a problem with.
There is not much you can do. The only “solution” I know is getting a new circuit for the website or a new Tor identity.
In Tor Browser, you can get a new circuit by clicking the onion button, then hitting “New Tor Circuit for this Site” (or Ctrl-Shift-L). Wait for reload. It may take a few retries to get a CAPTCHA. That is how I am logged in right now! At worst, I have needed to cycle through six different circuits to get the accursed CAPTCHA. Usually, I “only” need to try two or three.