Solved
Update 3.3: Cannot join existing server
Since this update, I can no longer join existing servers. I am always the first in the server, always squad leader, always Assassin or Quake squad. Something is wrong. Cyprus, Series X
SOLUTION:
On Series X, I went into network settings and realised UPnP was turned off on my router. The solution was to go and enable uPnP on my router, restart router, restart Series X (DNS settings on auto). Got to Settings > Network > Test Multiplayer Connection. You should receive the message "It's All Good". And voila, I was straight into a game after 7 secs of searching. Hope this helps someone else who has faced this issue.
