Any way to change role? For example, change from control centre only to control centre+scanner?
You can try changing roles by running the 'delete osconfig' command and re-inputting the basic information and then setting the role you want. It may or may not work.
The only way to be sure would be to perform a backup of the database and peform an osrestore.
But the backup can restore backup? i got the error:
ERROR: Backup image is incompatible with target system. Host roles must match.
Backup role: 3