I am currently in a prosess of changing to an new internett provider. I have changed the e-mail here in the forum, but not in the "eJukebox Accont"(the login after starting the program).

How do I do this?

Hi Gunsmoke,
To update your eJukebox license account login so that it uses your new email address do this:
Login HERE with your email/password
Click EDIT under your profile.
Change your email address and click 'Update Record'.