@TP-Link Hello, My ISP provider can't have the channel set to 40/48 for 5GHz they have however changed it from 153 to 11. would that serve any purpose?

Hello. I have an RE305 Range extender, It doesn't detect the 5Ghz signal from my ISP - Airtel, channel is set to Auto, i tried asking them to change they changed it to channel 153 citing its better....