ac3100 5ghz

Hello there, I am currently unable to connect to 5Ghz, I've tried setting separate SSIDs as well as combining them into one. Any ideas? Any ideas other than "did you try resetting it"?

Hi Everyone, new guy here. I just purchased a AC3100 and put it in system. At first all seemed good and on my droid phones and putters I was able to see both the2.4GHz and 5GHz bands advertised on my devices and was able to select which one I connected to. However, now I'm only able to see...