Archer C24: Auto Channel for 5GHz doesn't work
Open up a brand new C24. Without any changes of settings, I can connect to 2.4GHz WiFi but not the 5GHz WiFi. The _5G SSID Doesn't show up most of the time. When it shows up, it says 'unable to join' after putting in password. Happen to multiple phones and laptops.
Contact support and the advice is not to use auto channel. Specify any one of the low channels (36-48). Only then it works.
I also found that specify any of the high channels (149-165) will stop it from working. Not quite happy with the solution as I would expect the router supposedly choose a channel that is less likely clash with my neighbours. Should it be considered a bug that could be fixed in the future?