Cannot autorize PC in ADE: ID/Password wrong for ebook-provider

Hi,

I bought epubs on Thalia and want to put them on my Kobo. I have a new PC and installed ADE. When I want to autorize my PC and enter my Adobe-ID and password, I get an error saying "ID or password is wrong for the ebook-provider. Try again"

The Data works fine for Adobe.com and I can log into my account there.

The email was changed recently, but logging in with the old email does produce the same error. I tried password reset for the old email and never received an email for my request.

How can I read my books? Is there another way to download and convert acsm-files? I just want the ebpubs.