I use STRG+< (German qwertz keyboard) - on Chrome, Edge and the old Firefox version it was not a problem.
And I use Windows 10 and the current newest version of enpass for Windows 7+ PCs
e.g.: https://password.kaspersky.com/de/ - Just have 123, abc, ABC and [/$ in your password. 10+ chars long.
And: If you set up a 2FA for your Cloud service (OneDrive, Dropbox, ..) someone needs to get your cloud Service password, your 2 FA code and your master password of enpass.
One more thing: The PIN / Face Unlock is just working on your machine. It's not your new masterpassword on every computer, so if someone is "logging" your pin - he still can't access the password database. And if someone is trying to open the database on your machine -he can just try 3 PIN codes, and the PIN can have more then 4 digits. So it should be safe enough