This may sound obvious but your garage door transmitters need power to work.
Garage door intermittenly working.
If the remote works only when held within a few feet of the motor unit rf interference is probably the problem.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
Depending on the brand.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
When the garage door doesn t budge at all when the remote or wall switch pressed it s almost certain the power source has been disrupted in some way.
If the batteries in your transmitter are dead the transmitter won t be able to send a signal to your garage door to open.
First check to see if the transmitter on the wall inside your garage still opens your garage door when pressed.
First check the sensor lights.
The solutions firstly check that you re using it within the range required for your opener.