Thank you very much for sending the diagnostic logs.
We noticed that you have Avast Antivirus/Firewall on your primary machine.
Please make sure to add spacedesk in the exception list.
The following are the spacedesk details you might need for manual setting:
service name: spacedeskService
file path: C:\Windows\system32\spacedeskService.exe
TCP/IP Port: 28252
UDP Port: 28252