If you are having issues with your windows or doors here is how you tell if it’s a realignment issue..
If the door works okay in an open position then it is likely that the door has dropped and needs realigning.
Another way to tell is if you need to force the handle up in a closed position. Doing this will eventually break the mechanism inside your UPVC or composite door, making it much more expensive in the long run.
If this is caught early it can be an easy, and less expensive fix.