All the iPhones, iPads, laptops, TV and ip cameras work fine on the 2.4GHz band but, while I can connect to the 5GHz band and Windows tells me the Internet is available, none of the iOS devices or Windows 10 laptops can access it.
They worked fine with 5GHz on my HH5. They all have the latest software and I've tried hard-resetting the Hub. The only config differences between the bands, I believe, are the SSID and channel.
HELP! Any ideas?