Purchased Ebooks arrive in the wrong account

I seem to have 2 accounts on the Adobe Digital Editions app for Mac users (version 4.5): one on roannevanvoorst@gmail.com and one on info@roannevanvoorst.com - Therefore the Ebooks that I purchase arrive in the wrong one (info@...) - and I cannot access them after buying on bol.com/kobo . I have tried to erase my account at roannevanvoorst@gmail.com but that won't do - I get an error message

This problem occurs in the Adobe digital app, which I downloaded on a mac laptop. It seems that I did this twice, without knowing. The first time with roannevanvoorst@gmail.com. Now, my new books do not end up there, but I cannot get the app to open the other profile, either