fail to deauthorize

Hi,

Since I updated my MacBook Pro to Mos Mojave 10.14.5 I do have a problem downloading my ebooks to adobe digital edition 4.5. It states E_ACT_NOT_READY. I found in another forum that I need to deauthorize ADE. However, then I need to enter a password which I do not know anymore and is different from that of Adobe in general. I also fail to delete (the hidden) file of ADE regarding the authorization. What can I do??