I see there are some old related posts here, but nothing that resolves my current issue.
This afternoon the hub reset itself as it does from time to time, but it now no longer broadcasts 5Ghz, only 2.4Ghz.
I split the channels, and tried logging in to the 5GHz channel, but it just says unable to connect, but 2.4Ghz is fine. We have around 8 devices, and all of the 5GHz capable ones could not connect at all until I split the channels and selected the 2.4GHz one.
Any suggestion as to how to resolve this? Hub reset a few times, devices the same, but no change.
by reset did you do a factory reset using the recessed button on back and holding until the hub lights flash?
If you are still in contract, report it to customer services and get a replacement.