Xibo Windows settings

When i install xibo on my windows machine, ad forgot to registrate it, nw it starts directly after i shuit it down with ALT F4.
How can i change the settings of the windows client, where can set the URL, password?
Or do i need to uninstall the windows client first?

Alt+F4 will close Xibo temporarily.

Once closed, you can open the Player options screen from the Start menu.

Thank you - this works fine!