If this is the old Craft Robo then I don’t know if cutting master 4 will be compatible but this link might help you http://www.graphteccorp.com/topics/tp21005.html or you could contact Graphtec GB for advice - +44 (0)1978 666700. Silhouette Studio software should work and it is compatible with Windows 11 - free download from here https://www.silhouetteamerica.com/software