Hi @themrslime,
Thank you very much for sending the diagnostic logs.
Based on the logs, you have several similar software installed in your machine e.g. splashtop, Twomon, etc..
Please try to to uninstall the splashtop Virtual display driver first, then check if spacedesk will work.
Just open the splashtop Wired XDisplay Agent -> Advanced, then uninstall the Virtual Display driver then reboot.