Nighthawk EX7500

[bargemans]

Hi

Im trying to connect the extender to my BT hub 

It connects through 2.4Ghz but not through 5Ghz

The BT hub only offers channels 36, 40, 44 & 48 at 5GHz

How do I force the extender to connect through one of these channels and not the default channel 100?

[plemans]

Which bt hub do you have? 

Are you installing using the installation assistant or using WPS? 
i'd try factory resetting (push and hold reset for 7-15 seconds while its powered on) and then install using the installation assistant. 

That allows you to select the network when setting up 5ghz.