Update 15 July 2021. I received a prompt email from the authors and a new version popped up in the Store today. Version 6.63.836.0 fixed the problem. Very prompt and successful update. Thank you.
The latest update from the Windows Store has broken Enpass on my Surface Pro X, after many years of happy use. Fortunately, I have other devices to run Enpass on, but not happy since the Pro X is my daily use computer.
Update. I was able to delete the Windows Store version of Enpass from my Surface Pro X then install the Win32 version directly from the Enpass website and that works. So the problem seems to be with the X64 version on the Windows Store.
Edited just now by RayR