Garages are dirty dusty places and this dirt and dust can get into your garage door track causing roller problems.
Roller off garage door track.
A good household cleaning solution can do the trick for fixing this.
It is advisable not to forcefully pull a jammed door down as this bends the vertical tracks and popping out of the rollers from the track leading to serious damage.
Dirt is causing problems.
The rollers in your garage door allow the door to open and close smoothly.
Apart from the frustrations caused by garage door off track serious injuries and property damage may be incurred.
Open the door manually.
Disconnect the garage door from the opener.
Once you locate where the wheels on the door are jumping.
Here are viable diy tips to fix a jammed door.
If you notice that the rollers have jumped the track immediately stop using the door until it can be repaired.
Reach overhead and pull the rope that releases the door from the opener.