Eventuelly, I logged in another admin account (not root) which never used Acrobat before and there at least I was able to do the activation. Now, at least, I can use Acrobat even with my normal account.
Eventuelly, I logged in another admin account (not root) which never used Acrobat before and there at least I was able to do the activation. Now, at least, I can use Acrobat even with my normal account.