Please add me to this list.
On my iPad 9. Generation with iPadOS 15.7 Enpass version 6.8.3 loses directly after start. I also deleted the app and installed new, but that didn't help.
As I use iMazing to save older versions of my apps, I reinstalled Enpass version 6.8.1 which works perfect.
A hint: on the iPhone I got a message that I was qualified for the premium verison of Enpass and that I should enter the email address I used to register. Which I did. On the iPad this message did not show.