I used the portable version and thanks to the comments above I figured out how to find my local backup
(C:\Users\UserName\AppData\Local\Packages\SinewSoftwareSystems.EnpassPasswordManager_SomeCode\LocalState\Backups)
However, a step-by-step instruction of how to reach your passwords for the different cases (with sync, local only, etc.) should have been given by the developer. Mistakes happen, yep this is a pretty big one, but if the developer gave an official temporary solution, I would have continued using Enpass. This silence is making me think that I can't count on the developers and if this happens again I'm at the mercy of the community sharing their workarounds.