Found a workaround.
Open the browser that opens when it tries to sync.
Go to https://login.microsoft.com
Login manually with the account you want to use with Enpass.
Now launch Enpass and try to setup sync, it should now default to whichever account you just logged into.
I am having the same issue. It requires me to setup onedrive sync again with the new app, but when I try, it auto connects to my corporate account in a flash and the screen goes away. I cant find a way to switch to my personal one drive.