Here are three possibilities.
Garage door opening crooked.
Verify if there isn t a block between them.
Then look to see if the rollers are in working order.
Energy from the spring turns the drum which either winds or unwinds the cable thereby lifting or lowering the door.
This will cause the unit to stick.
Pulling the door up and down is a garage door opener.
Warping of the door will also cause it to run crooked and stick in the tracks.
One of the most likely culprits when you have a crooked garage door is a broken torsion spring.
Your garage door has two overhead springs some doors have the springs on the side called extension springs that are responsible for opening and closing the door.
Safety sensors are the electronic eyes near the base of the door track on both sides.
The door might be hard to open and close due to it binding.
Garage doors have a cable on each side that s wound around a drum with one end attached to the door itself.
First you should check the safety sensors.
If the opener is adjusted properly the garage door will move up and down in an even motion.
If one of these cables is broken power from the spring can t get to the door and the door hangs crooked.
By pushing the door back into position you should have made the vertical track straighten.
A crooked or off balanced door.
Without proper adjustment however the unit may run along the tracks unevenly.
It is possible that the vertical track down the side has gone out of alignment and shifted due to a slightly loose lag screw.
Push the door back to adjust the door and get the center aligned again.
They need to have a clear line of sight between them in order for the door to work properly.