You can just add the OSCReceiver component to anything you need to listen out for OSC commands - including stuff like the gamemode!
The address you get from the OSC Reciever is an OSC Address. When binding to the “OnOSCRecieved” delegate, you get another pin for sender IP (annoying something not included in the native plugin by epic!)
Good to know that there are compatibility issues, thankfully I don’t have any plans on using OSC on anything other than windows.
Just a heads up, if you’re using @monsieurgustav 's plugin in 4.23 or 4.24 you may get build errors due to the conflict with the included OSC plugin.