I updated to the latest version of Enpass this morning and it appears there is an issue with TOTP generation. All my accounts that have a secret stored are now reporting "Invalid TOTP Secret".
I tried disabling 2fa for one of those accounts and setting it up again with the same result. I have backup codes I can use for a very brief period, but this is a pretty significant issue.
Additional info after further testing:
It looks like it may not like it when there are spaces in the secret. When I tried setting it up again using the QR code and Enpass 6.2 on Android it generates codes as expected.