OpenRA

Ok, solved. Uninstalled the game (which I'd originally installed via Flatpak), and then reinstalled it using the AppImage instead. Assuming it didn't work originally because I only properly installed Mono after openra before.

Hi, I've just installed openra and registered on the forum. I've then tried to connect to the forum in-game (having copied and pasted the authentication key from the game into the authentication key part of the control panel), but now just get a message in the top-left of the openra screen saying: "...