Just purchased a brand new garage door opener with the MyQ app and internet gateway. When I log in to the phone App or web portal and try to add a device, it asks for the serial number of the garage door opener, however, the serial number is 12 digits long, NOT the 10 digits the portal is looking for to add a device? It won't let me add the device with this longer serial number. How do I solve this? I bought this opener complete with the MyQ internet gateway but I cannot add the garage door opener!