That's actually a fairly quick fix, just take a look at the first post. You're loading the freeplay map, you need to open singleplayer. This mod does not use Multiplayer. It only uses the missionscript freeplay simulator.
Hello everyone! I'm posting to assure you that the work on the submod is going well albeit at an even slower pace: y'know the usual RL stuff plus other interests and games that may - or may not - take my time. But I'm still here nonetheless, and I'm still working on it.
Stay tuned for more news in the days to come!