I just received two Sonoff TH16s, and can't pair either of them. I put them into pairing mode (power them up, long press on the button until the three flashes) but I can't see a WiFi network from either of them to connect my Android phone to.
I've searched for the networks on multiple Android devices (and a laptop), and I've installed a WiFi analyser app to see if it shows up on the spectrum somewhere. But neither appear on there, either.
I'd put it down as a faulty unit, but given that both TH16s are doing the same thing, it makes me wonder if I'm missing something.
I also have two Sonoff Wifi Smart Switches, and paired both of those just fine, and they're working nicely in the app.
Any advice? Thanks!