There are a few things that could be going on with your retractable storm door. One common problem is that the tracks the door slides on get dirty and clogged with debris, making it difficult or impossible for the door to move. If this is the case, you can usually clean them by sweeping or vacuuming them out. Another possibility is that something is blocking the path of the door as it opens or closes, such as a piece of trash or a stick. In this case, you'll need to remove whatever is blocking the way and make sure nothing else gets in the way in future. If neither of these solutions fixes the problem, then it.

If the door doesn't retract all the way, you might need to remove the screw on the metal rail that holds the door in place, and then adjust the door by moving it up or down slightly until it fits snugly against the rail. If the door is crooked, you can adjust it by tightening or loosening screws on either side of the track. Finally, if your storm door has a rubber seal around it, make sure that seal is in good condition and seals properly against the door frame. If not, replace the seal with a new one.