I was having trouble getting the device to stay securely attached to the bottom of the garage door opener with the double sided tape. It shifted from the vibration of the opener and the laser moved causing it to miss the reflective tape on the garage door.
I was looking for other places to tape the device, but then I tried a different approach. I attached the device with zip ties around the garage door opener, and then shimmed it tight to keep it secure. The laser has hit the tape consistently since installing this way.