Error message, Licensed by another user

Hello

I recently had to have my administrator password reset, due to me forgetting my password.

I keep getting this message coming up..

Error getting license

License server communication problem: E_LIC_ALREADY_FULFILLED_BY_ANOTHER_USER

I downloaded Adobe Digital Editions about 2010/2011, I never had to sign up to and Adobe back then and only had to now after opening up the program again.

Now ive created my Adobe account i get this message, how i "registered" before i dont know as i have 1 email address and i cannot find anything over the past few years associated with it.

Can you please tell me how i can access my books again, ive tried deauthorising my computer and re submitting my adobe credentials but it still wont accept it. Also tried downloading them again from the website i purchased them from.

Thanks