So far I have never problem using Authy, so when I compared it with Google, Using Authy is simpler when we change cellphones, we can log in again using the same cellphone number and receive a code via SMS. I have experience lost the google 2fa code and can't login on 2fa. because of that, I prefer using authy for beginners who have weaknesses in storing data or code on paper.
From the very beginning I traded using Authy security. I think it's still safe and I feel comfortable with the automatic recovery feature and it can be used on multiple devices. I hope there are no other losses for me and other users later.
Then regarding the update problem, I checked in my application Authy that I have the latest version. I checked from the Play Store. Is this a little different from the one on the play store? Hopefully not. I see the details My update version is already in 25.11.
I never checked my application is updated or not, because I setting up it automatic update on my phone. Just set it on your play store, then all applications installed will automatic update when that aplication ask for it. but if you're not sure, you can check it manually on their site.