Wyze Garage Door Controller Unboxing and DIY

How close does the camera need to be to pick up the QR code?

Did I miss something? Where does the black and red wires go in what terminal on the opener?

I'm curious...I installed my Wyze Garage Door controller and V3 cam but as of yesterday I no longer see the little button in the app allowing me to open/close the door. I called Wyze yesterday. What a waste of time that call was. I deleted the cam and garage door controller and started fresh. Still, no access to open/close the door in the app. The V3 cam works but not the controller. Thoughts?