BFGA2 Co-Op campaign problems

My friend and I have repeatedly tried to play an Imperium campaign together but whenever we do the person trying to host does not get the notification that the co-op partner is joining their game, and then the co-op partner is booted back to the main menu with no error message. Sometimes we are able to load in and start a battle but the second the sides join combat the co-op partner is booted back to the main menu again. This is rendering the game completely unplayable in co-op and all of the bug reports I've seen on the subreddit for the game and here regarding co-op are from 2019 when the co-op system was in beta. We are both getting very frustrated and any help would be appreciated.

I have the same issue,I have progressed far enough in campaign to play co op but when I press the invite button, it does nothing and nothing loads not even a friend's list

Same I haven't been able to play co op once