Came here for the same reason as everyone else:
The Desktop and Windows Store releases of Enpass are definitely not the same. The details have already been covered, and the case for needing exact parity between Store/Desktop releases is also covered.
i would add that the browser extensions also behaved differently. The Edge extension only works with the Store version, and until very recently, the other browser extensions only recognized and connected to the Desktop version of the app. i'm pretty sure i even found an Enpass blog post about this, which effectively forces people to run both versions of the app if they want to use Edge and any other browser. After removing and reinstalling my Firefox & Chrome extensions they seem to connect to the Store version, but it looks like a very recent change and typical users might not realize the extensions need to be updated.
The discrepancy in Settings is really annoying - you can't claim they're the same when certain settings just aren't available in one and can never be activated in the other. It makes no sense at all to tease the "Premium" settings in Desktop if they can never be enabled. Just remove them and leave the "Store Only" settings ad.
i really like Enpass, but you really should allow purchasing a Premium license for Desktop and not claim they're the same thing.