Keep trying!
Read the instruction manual carefully. I use a SH2 with both 2.4Ghz And 5 GHz active.
Seem to remember that there’s a switch to throw, in software or even a manual switch. I got my Roberts Stream when digital was just starting up and used FM initially. Hope you are not confusing WiFi with Bluetooth. Forget Bluetooth, You need a WiFi connection to get started.
Have you tried manual settings as on page 18 of the manual (below)
I've made some suggestions as to values to use
Important edit: I've just noticed a mistake in my suggested values, the secondary DNS should be 8.8.4.4
It might be best to do a factory reset first and start with a clean slate
No problem, I would be interested to hear back from you when (notice I said when, not if) you get it working👍☃️
Good luck!
Some more clues.
Memory is coming back now. When I received the SH2 replacing the HH6 it would not connect to Wi-fi. Before you got the radio, did you install the HH2 yourself, or was it a technician? He may have altered settings from standard. You just can’t hide the WiFi on a SH2.
Hence V_Meldrew asked you to do a factory reset,
My lazy solution was to setup using WPS. It’s worked ever since. Hope your friend’s Hub is not a HH2, then it may pin the problem down.
Can't understand why it's not seeing the wi-fi signal from your router unless you've got both bands disabled?
Sounds daft I know but I don't see anywhere in the thread where you mention having any other Wi-Fi devices