ADE Authorization error

Hi!

My ebook-reader device is Authorized.
Im running windows 11.
Device (and computer) is restarted.
ADE is reinstalled. 

Non DRM-books can be copied to my device.
DRM protected books generates the folloeing error message: 

"CE_COPY_NOT_ALLOWED" (se. attached pic.)

How can I solve this? 

Reg. Johan