I do not know what you mean by changing the channel. Below is the settings my router is currently running on. What should I change?
Wireless Mode: Auto
Control Channel: Auto
Channel Bandwidth: 20/40 MHz
Extension Channel: Auto
Also it says I have two different types of frequencies which are the 2.4GHz and 5GHz. If I change the settings in one frequency, should I change the other one as well? Since I did put the same network name for both frequencies, it only shows up as one network.