@aTOMic1971 I have tried deleting settings with the same result. And I have just seen this C7 user with the same problem of settings not respected:...

@MiBi Not possible. We are talking about that here too: https://community.tp-link.com/en/home/forum/topic/165494

@aTOMic1971 Thank you very much. I will get it another try. Regards.

@aTOMic1971 Thank you

@aTOMic1971 I have tried all combinations, and router always emits in 80mhz.

@StuartP Has just installed 1.3.5, and can't use 5GHZ 40 mhz. Always use 80 mhz, and one of my devices uses 5ghz, but only with 20/40 channel width. Please solve this problem. I need to fix width in...