Hello there! Yesterday I bought sonoff ZB mini extreme (zigbee smart switch). I connected the wires and I’m sure it’s right because I connected the device to bulb which shines. However I find difficulty with connecting the device through the ewelink app. I tried so many times, with quick connection, compatible pairing but nothing helps. It searches the devise for 2/3 minutes then it says “Device not found”. I tried to scan the qr code on the device but it says it’s not valid. What I am supposed to do. How to add the device in the app?
Your device requires a Zigbee bridge to connect. Have you got such a bridge?
No, I don’t have such thing. I suggest the fault is all mine, because I accidentally bumped into video where only the switch was connected and there was no problem with connecting in the app. I ordered the switch from aliexpress if it does matter but I assume I have to buy this bridge which is separate device. Did I get it right? Thanks in advance
You need a bridge for this device, but Sonoff offers many interesting devices that connect directly via WiFi. Similar to ZB mini extreme is:
which does not require a bridge. You were simply unlucky that in your first contact with this company’s products you came across a specific product that has some advantages but some disadvantages 
In the long run, the Zigbee bridge will come in handy, as it will serve to expand the system. And let it be the Sonoff ZBBridge Pro version.
A cheaper solution is the @0o0o0o0 proposal, if you can return the ZBMINI or swap.