Error getting License. License Server Communication Problem: E_AUTH_BAD_DEVICE_KEY_OR_PKCS12

Hi,

Yesterday I bought a book, downloaded the ascm file and when opening it in Adobe Digital Editions I got the error:

Error getting License. License Server

Communication Problem:

E_AUTH_BAD_DEVICE_KEY_OR_PKCS12

and I'm unable to open / read the book.  The last time I successfully bought and opened a book was in June 2020. I think I changed the main email address and possibly the password for my Adobe Id between June and now. I'm not sure if that's the issue?

Next I tried to de-authorise (Erase Computer Authorisation) and I see indeed that the drop down email address is the one I used before with my Adobe Id not my currently used email address. I first tried using my current Adobe Id password to de-authorise and next my previously used password (I have the password history in 1password) but both don't work.  I get the error message: "Unable to Erase Authorization. Please try again after some time."

I also tried to change the main email for my Adobe Id back to the previous email address, the same as I see in the ADE dropdown, but with same result. I'm unable to unauthorise my computer.

I can successfully log into my Adobe Id Account from the Adobe website and I have an active Photography plan.

I bought the book yesterday but I can't read it. I spent several hours trying to find out what's wrong.  I don't want to create a new Adobe Id because I have several books associated with the old Adobe Id that I don't want to lose access to. What should I do? 

Thanks,

Kristof