Welcome! That can be a bit tricky with Crossover. If the install itself worked but registration isn’t going through, it’s often because the app can’t properly access internet services inside the bottle or needs a different Windows version setting. You might want to check if the bottle is set to Windows 10, and also make sure networking is enabled in Crossover settings. If that still doesn’t help, sometimes running the program once as administrator inside the bottle or reinstalling it in a fresh bottle fixes the licensing issue.