I use to use Authy but something happened with its timing of OTP tokens, so whenever I tried to log into a site where I activated 2FA, the site replied it was invalid. Tech support was useless.
Because of this problem logins become useless, and since I had several with 2FA activated, I became SOL. It took several days, and several emails to site technical support people to reset my 2FA so I could login again, and re-enable the feature.
Since then, I reverted to Microsoft Authenticator for just my Microsoft accounts, and Google Authenticator for everything else. Never looked back.
The moral to all of you who use 2FA is make sure you are using a reliable Authenticator app, and download Recovery Codes as backup. I did not do the latter which made everything worse because I trusted my app never expecting a problem.