Not sure I have any other suggestion for you, considering you’ve tried the AppData deletion already.
Does the problem still persist? Maybe it was a short outage/server lag 5 hours ago.
I find this new thing which is steadily increasing…which is i open the list of potential games in multiplayer ( not ranked) and lets say the list shows 6 games…I can only enter 2 of them, the other 4 are “blocked in a sense” you click and nothing happens…is their some new thing we need to do like update the game? And i cant believe for a second that only 6 games in total around the earth are being played…what gives?