Why isn't my 5 GHz not showing up?

I bought a new router belkin N450 Dual Band.
I did the quick-easy setup and it showed the 2.4GHz and 5 GHz at first on my laptop and iPhone 5, but not my ps3. Now it doesn't show up on my laptop anymore nor ps3.It only shows up on my iPhone. Please explain and tell me how i can fix it so it shows up on all three devices

I'm so sorry i don't understand a word you just typed

  • Why isn't the netflix app showing up on the app store on my iphone 5c? I go on the app store and i search "netflix" but the app doesn't show up it shows me a bunch of other apps? How can I get it? I tried going on the internet for it to redirect me to it but it still doesn't show up!
  • Why isn't my timeline on the twitter app showing everyone's tweets? Many people have tweeted and it doesn't show up on my twitter for iphone app. I know they are tweeting because it shows up on the computer. This just started happening a few days ago. I reinstalled the app and it showed them all, but when i closed it and reopened it later, it went back to showing less tweets. That also happens when i logout and login.
  • Why isn't my item showing on amazon? I'm trying to sell my old iPhone, an hour after i put it up it wasn't in the listings why not? No i didn't check, but i clicked the sell yours here button and added all the details and everything but its gone. I don't want to put it up again yet because i'm worried it might still be on and ill be selling 2
  • Why isn't my iPhone music showing it's album covers? So I have purchased all of my music from my iPhone, but I decided to plug it into my computer yesterday so I could add an AC/DC CD that I bought. When the album was put onto my phone, only the AC/DC album covers showed up! Is there a solution?