I have never ever had issues finding matches with over 400hrs played, recently I seem to have server issues.
I cannot accept party invites from friends and I keep getting an error that says “Unable to connect or find a game”
My internet is stable and all other games work fine.
When I log into the game I get an “account sign in failed” Error code C00T01T-1X-03
Can someone please assist me. 
Thanks