Can't sign in again either. I did have this problem before but it sorted its self out after a week. I could of swore I read on the forum that this issue had been fixed, lol obviously not. I guess VM working on the issue has to be better than PSN trying to fix it.
I connect wireless and I can play my Xbox one fine, but ps3/4 don't sign in. Neither does the psn app for my phone connect while trying via WiFi. But it will connect from my 4G if I disable WiFi on my phone.
I downloaded MGS5, and been playing since its release on 01/SEP/2015
-- Red (VM SH2 AC Beta tester) Running on 200Mb VM service with SH2 AC in Modem Mode, with a ASUS RT-N66U router. With this setup I get Fantastic WIRED and WIRELESS Signals in my home. I dont work for VM. But I work in IT, and I know my tech. My advice is at your own risk.
I've tried every solution, the fact is virgin and psn have issues. I used psn for years with no issues except when psn was down, and now this. As I said not a major issue for me as my Xbox One runs flawlessly using the same wireless connection, just sometimes won't let me login if I fancy playing an older cod on ps3.