Got PS4 and GHOSTS xmas day , Free trial to Playstaion Plus ,Multiplayer worked perfect . Purchased ghosts Season Pass and Playstation plus annual subscription another 100 euro .And since then cannot play Online Multiplayer ?For a while I was getting a blue screen on Ps4 when opening Ghosts that said report problem and some fault code .Rang Ps Network said it was Activisions Fault Deleted and re installed and renewed licences and that has stopped but still cannot play online ,Just get check the server ?which is perfect .Router etc is perfect ? Nat 2 etc. Help please any ideas welcome.HELP