FVI have one Iris and one gocontrol, both hooked to Craftsman openers. One wire goes to red, the other to white. Hooks in right where the wall switch does. I paired them to Smartthings at the hub, before installing. I do remember they were both quirky. One I had to un-pair and then pair again. I had to push that button on the side a bunch of times. After I got them running, about a year ago, they have worked great. I do remember I had to push the pair button more than once. Also make sure your door sensor is pointing in the correct direction…check battery voltage…and make sure your door closes with the original switch. (I had something blocking my eye, which moved when I was fiddling with the sensor install)
FYI: Step 9: Finally, configure the tilt sensor orientation by manually opening and closing the garage door before controlling it.