In the installer ensure that you have entered your username (forum username, not email) and password. Then check the game paths, if not sure, click Autodetect. After that, click on the Okay button, You should see Welcome, wolkenlaufer if entered correctly. Click the reinstall. If the guides are still trial, I would advise you to verify the membership or make a ticket here https://www.dugiguides.com/amember/helpdesk