Watching the image of the door, the finishing is not perform up to the mark in order shape and based on the design frame the door especially in the different weather changes get blocked. In situations like swollen wood, wrong door frame, loose hinges, and incorrect door alignment.
Using Sawdust and glue, one can easily cover the gaps in between ply boards. The method is commercial, the wood filler is more useful to make a change.
You can realign the door surface and will adjust the hinges, before that you need first to determine what leading the door misaligned. Things to need check before. Find the door level and Check is the gap between the frame and door align correctly.