Hello, I did not know who to contact because on xbox they do not pay attention to me with the reports but in the game I had an error that does not give me the achievement of 4 friends but I do have the one of 20
Re-triggering an achievement will now re-send the trophy ID, up to once per day. That will also work for any previous achievement/trophy which failed to unlock.
Let me know if you still have any issues once you get that update.