Just to make sure - all of you are using the mod manager, right? You can try sharing your profile with all of your friends, which will sync up both mods and configs. That should usually fix things like these.
To do that, just choose your profile, then go to Settings, type "export profile as a code" in the settings search, and click that.
Then, your friends will need to open the mod manager, but BEFORE picking a profile, they should click the "Import / Update" button at the bottom, and use the code there.
Also, make sure that EVERYBODY has Steam/Epic crossplay turned off in the game settings. It's known to be an extremely buggy and unreliable feature.
I can't seem to find anything out of the ordinary in the log, unfortunately :(