Can't connect to 5gz with mobile devices

---

Mrcorvettegolfe wrote:

I can connect to 5gz with a wired device but not with a mobile, cell or tablet.

---

This doesn't make sense as if you're connected wired, you're not using 5ghz. 

What firmware is on your router? 

What modem/gateway is the router connected to?
What error are you getting? (details help)

The more you can tell us, the better we can help. You didn't give us much to go off. 

There's a support site with access to manuals, firmware, install guides, etc.
Go to https://www.netgear.com/support/
Type in your model number and from there it'll take you to the above.
Its a great resource to start with.