The usual positive caveat in such situations is that developers allow people who already have the previously supported client carry on using it, but Enpass seem to have knocked sync with their server on the head. This was all reported to us via AAWP regular Steve Heinrich:
@stevelitchfield it seems that v6 of the UWP @EnpassApp is no longer supported on W10M. No longer in the store on W10M and is missing from the site too https://t.co/Gazs3PQOK5 (under the Mobiles tab) Current W10M app v5.5.7 stopped syncing. They're no longer cross platform😕— Steve Heinrich (@pixelswim) February 1, 2019
All a bit disappointing for a company which had fully embraced Windows 10 and UWP apps in the past.
There are alternatives, of course, and I'd welcome suggestions in comments.
I've been a fan of KeePass 2.x as an open source encrypted database system, for a decade now. I realise my set up is a bit geeky, but I keep my master encrypted 'blob' on both Google Drive and OneDrive (for extra security!) and then use KeePass2Android on my Note 9 to access all this live on my Android phone, then I use KeePassReader UWP on my Windows 10 Mobile phones - as the name suggests, it doesn't allow for live changes to the data, but 99% of the time all I need is access. There's also KeePassWin UWP, which does allow some writing, but isn't that polished and I'm also wary of having more platforms with write access to my life secrets. As I say, it all works for me, but the simplicity of Enpass UWP will be missed.