Can anyone help with this? I have some new smart plugs, I have two different brands, and I've tired two different apps. 5ghz is switched off on my router. They still don't work. The error message I get in the SmartLife app is that they can't connect to the router (attached screen shot). The password is correct, I've tried factory resets, restarting the router, switching channels, the standard set up advice, all the usual things. My router is a few years old. I tried them at someone else's house, they work fine, immediately. So nothing is wrong with the apps or the plugs, but my router is somehow stopping them from working. Can anyone help me out here? I'd really appreciate it. It's driving me insane. Any more info you need just ask and I'll send it. Thank you!