Same problem here with the PS4 version. Yesterday I wasn't able to login and after a little research on the web I change the "MTU" value via the internet settings on the PS4; set the value to 1300 (the default value is 1500). Go to "Network" > "Set Up Internet Connection" > "Wifi" or "LAN" > "Custom" > Select your network and, put your password etc. Leave everything as it is, just change the MTU to 1300 and save.
That helps me yesterday but today it didn't work