Works very well but confusing – Craftsman Smart Garage Door Opener Review

First: for those having trouble, the app is asking for the serial# of the gateway, not the garage opener motor! Once I got over that hump the rest of it worked very well. Couldn't be happier. Minus 1 star for bad instructions on locating serial number.
Review by Time wasting Gamers united! on Craftsman Smart Garage Door Opener.