Digital Editions issue after a reinstallation of Acrobat Pro DC

Some time ago I had an issue with Acrobat Pro DC: when I asked for assistance I was advised to reinstall the product, and the issue was solved.

Some time later I tried to access one of the texts that I had downloaded some time ago for Adobe Digital Editions, and suddenly I found that I cannot access any of them because I get the message "license key damaged".

The chat assistance in Italian advised me to deactivate and reactivate the authorization of the program, but when I tried to do so I received the message that "it was temporarily not possible". The Italian-language chat support then passed my issue to the English-language chat support, which suggested that I reinstall Acrobat Pro DC. When I pointed out that my problem was rather with Digital Editions, he advised me to post a message in this forum.

Since I no longer know who to turn to, I would just like to point out that I have paid for each of the texts that I can no longer access, and that I pay my monthly fee to use Acrobat Pro DC. Wouldn't I deserve help with that?

Updated email: framaggi55@gmail.com; Old (but working) email: francesco.maggiore6@tin.it; Phone #: +39 335 528 5014