Hi

i have archer c20 router. from last month i have been facing 2.4ghz net issue. 5 ghz net is working well. Only problem I have been facing is in 2.4ghz net. No internet issue in 2.4ghz net. I have changed the channel, width, updated the firmware version but still i am facing the same problem with my 2.4 ghz net. My internet provider also checked my internet connection,nd there is no problem in the internet, they said its router problem

Please give me a solution