One year after release, and I still can't play campaign with my friend on PC

Social Manager shows nobody and says it can’t retrieve data. Invites aren’t going through in the Xbox App (literally nothing happens) and I am baffled that in 2020, one year after release, the people behind such a huge franchise can’t even make the game work. Game that hardly anybody is playing anymore because of the devs incompetence by the way. I paid for this game you know? It’s not like I got it for free. Can’t wait to not buy Gears 6.