I too have exhausted after intensive searching and trial and fail from all the suggestions which did not work.
Details: Origin in the middle. Working fine
EA takes control and within about a week or so, what was normally working systemically perfect, now will let us see each other, send a request, but no response, no notification, and no ability to acknowledge to group together. One time, we ended up in game but not together, but that's just stupid because the purchase of the game was co-operative mode. I personally am ready to toss it, and my faith in EA in the toilet.
Hopefully, unlike the fiasco with the "can't die at 1 health" bug that was way overdue for repair, I'm hoping this gets repaired. I have close to 80 games on steam, not like I can't just move away from EA, but is that what it has come to?
I understand the game is old, revenue is poor on it, and new users? Not seeing the status, but when I start seeing the same users over and over, I star wondering about how many are actively using it. Our conversations with many others are having the exact same problems.
Please, EA, fix this, or just give up and shut it down. It's been bug ridden, and the whole experience of the game is moot now because of all the problems.