Nighthawk 5g Wireless can't connect

I can connect to the 5g wired but not wireless. I tried to connect to the 5G with my android tablet, Ipad, 2 Iphones, 1 android phone and they won't connect but will connect to 2g. I went into the router and looked at devices and the android tablet was listed under 5g wireless and so was the Ipad but when I tried to forget the 2g and connect with 5g it wouldn't connect. I tried on my Iphone 13 and got a message"Unable to join Netgear92-5G wifi channels in use by several networks". Possibly restart router which I did and no difference. I wouldn't get the message on other devices but would revert to Netgear92.