When I visit wp-login.php your login form appears. After username and password the two-factor authentication form field appears. Entering the correct code does not work with google authenticator.
When I then change the url to /wp-admin/ and refresh I am given access to the dashboard as admin.
I don’t want to chat about it. Just disprove what I wrote, acknowledge it, give me a partial refund or fix it and make a note in your updates. Wishing you the best.