Thanks for the info.
Is there any issue on spacedesk discovery on your side?
Based on the debugview log file you sent, the viewer were able to connect to the server’s IP address properly, it’s just that the server detects an incompatible display hook driver on your priamry machine which is the cause of display off status on your side.
Were you able to remove/uninstall the incompatible display driver detected by the spacedesk server?
Please confirm if you have splashtop WiredX display or Duet Display software on your primary machine.