I do not see any devices on the activated devices list despite having two (PC+reader)

Okay, long story short: I had an older Adobe account that was linked to some devices that do not exist anymore (broken and scrapped) and I have a new computer now. Today I bought a book with DRM protection, installed ADE on my comp and tried to authorize it with the old account. But could not be done with it because "it was already used elsewhere". Okay np, so I went to the Adobe portal to deactivate the devices from the account. Surprise - in the list there is nothing. I had this account linked to my ebook reader and old scrapped computer, yet nothing here. So obviously I cannot deactivate anything.

To make it shorter, because I was already a bit annoyed and I wanted solution NOW, I closed the account, opened new one and linked it to both my new computer and my ebook reader, where I deactivated the old one before. The book is readable in the reader now. So now I should have two devices in the new account, right? Again: Nothing. The cra*py Adobe system does not show my activated devices again and so as a consequence I could not deactivate them externally from the account if they broke in future. Thanks Adobe for your amazing system which just makes everything needlessly difficult and dysfunctional. 

PS: I would like to add that I am heavily anti-pirate and always buy everything if available, as the mentioned book in this case. But why not make the protection system more convenient and functional so it does not last 2 hours to grind through various issues? This was absolutely frustrating.