I had this problem a few days ago, that whenever I put in the generated authenticator code it would say it's invalid even after trying multiple different codes. Yesterday I decided to give it another try and it worked, but now when I try today it keeps saying invalid code even though I am putting it in right and have tried multiple different generated codes.

Thank you

If your code only works occasionally, synchronizing your device's time may fix that.

You can also try entering the code, for example, during the first 15 seconds after generation and 15 seconds before expiring to see if it is a timing issue.