Model- xr700, Can't find 5G connection for my samsung fold 2

Hi, after setup my new Nighthawk xr700 i just noticed that i can't find 5G connection for my Samsung fold 2 but i can use my other netgear router 5G connection. So my macbook and my desktop pc can find 5G connection from nighthawk xr700 router but my fold 2 can't. I searched in Google and found that i have to set my channel 157 but in my router i have 32 to 48 max Can't set it to channel 157. I need help to use my nighthawk xr700 router 5G connection for my fold 2.