Same here, except I don't have Edge on my work PC so for me, iCloud now doesn't work at all.
What happens is it opens to apple-cloudkit.com, that asks me to log in, which I do (including 2 factor auth), then it asks for permission to open enPass - which I allow - and then the webpage and enPass both just sit there doing nothing. Tried using Chrome and IE. Incidentally this works fine on my Linux machine.