In 3.2.9 on ubuntu 22.04 is it possible to install Authy or Google authenticator instead of using the 2fa email? I have a smtp setup in ISPConfig and I find I need to re-send a 2fa email a lot because the first one fails.
No, see https://forum.howtoforge.com/threads/add-totp-i-e-google-authenticator-2fa-to-logins.89860/ for more TOTP info.