If your PS4 shows failed to login try to connect to a different Wifi (propably to your phone by enabling tehernet and Mobile Hotspot) if it worked then the problem could be from your router.
Call your ISP and ask them to change your router to public IP.
I have changed my router twice and it worked for a week but the problem keeps reoccurring until I requested my ISP to change the current default setting to a public IP.
Hi. What if the media server was disconnected? The modem is in my parents room? And I've tried mostly everything but all it says is psn failed still? Does that mean I'm like banned or something? I've also never hacked besides with my mates and they help me hit solid trickshots.