Today I sat down determined to make this work. I have a Liftmaster Residential opener that uses the MYy system.
Here are the steps I took to get this to work after reading all the different posts.
1 - Install the Smart App code off GitHub
2 - Install the Device Driver - myq-garage-door-opener-nosensor.src off GitHub
3 - Install the Device Driver - myq-garage-door-opener.src off GitHub
4- Edit the new garage door device and make sure the Type is set to "MyQ Garage Door Opener"
5 - Configure the App with Account email and password.
6 - Create Dashboard - Device: Garage Door - Template: Garage Control
Synopsis: You need BOTH Drivers above and the device set to the correct Type. If you do not have them it will not work. The only gotcha i see a the moment is that status is not properly represented.