There are various reasons as to why the myQ app won't open or close your garage door:
When using the myQ app, you can choose to either tap once or press and hold to open or close the garage door. See Customize the Open and Close Commands in the myQ App
If you see "Monitor Door Only" in the app, your door sensor may not be paired with the opener. This can happen if you recently erased your remotes from the garage door opener or replaced the receiver/logic board, see Re-pairing the Garage Door Opener to the myQ Smart Garage Hub or Smart Garage Control.
How to Fix It:
Verify your mobile device is connected to the internet from either a router or mobile service provider. Note: The app may be temporarily unresponsive when switching between Wi-Fi and mobile data.
Attempt to use the myQ app using your mobile data by disconnecting your phone from Wi-Fi. If the myQ app works, troubleshoot the Wi-Fi router connection and contact the router manufacturer/ISP if necessary.
See When to Contact Your Internet Service Provider (ISP)
If your garage door opener no longer has power, the myQ app will not activate the garage door opener. If there is an issue with the garage door opener preventing normal operation such as stripped gears or a bad logic board, these will need to be resolved to use the myQ app.
Test the garage door opener from the remote or door control. If the garage door opener does not work, troubleshoot the garage door opener.
Troubleshooting a myQ Smart Garage Door Opener When It Won't Power Up
If you are experiencing Close Errors or unexpected behavior in the myQ app after two or more attempts, it is recommended that you operate the garage door opener locally from the control panel on the wall or a handheld remote control and fully open and close the door twice.
In some instances, interference may occur when the hub has been installed too close to the motor unit preventing the hub from controlling the garage door opener.
The door sensor sends signals to the hub when the door moves to verify if the door is in the open, closed or moving state. If there is an issue with the signal getting to the hub, the app can report the door in the incorrect position.
If your router has no power or lost connection to the internet, the Wi-Fi Hub cannot communicate with the router to receive any commands. The app will show that the opener is offline.

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