Can't read ascm books anymore

[Sylvie33453077w1dz]

When I try to read the book I just got from the lybrary, I have an error like "

This book is protected. Having previously deauthorized your e-reader, you must re-import it with ADE`". 

When I talked with Kobo, they told me to put back version 3.0 for ADE besause it can cause problems on windows.. When I do , I have an error E_ADEPT_INTERNAL when I try to authorize the computer. HELP!

[John T Smith]

You need to ask program questions in the forum for the program you are using
To ask in the forum for your program please start at https://community.adobe.com/
Moving from Using the Community (which is about the forums) to the Digital Editions forum