What is the most logical next event?

How to seal a door
Tighten the hinges on your door.
Some drafts can be caused by loose hinges, so before you seal the edges of your door, you should take a few minutes to tighten any hardware.
Lift the door by the doorknob.

Select from the following. *If you can move it upward, the the hinges are probably loose. Use a screwdriver to tighten the screws holding the hinges in place. *Lean it up against a corner or against a wall to see if there is any slack in the hinge tension. Lift up the door slightly and touch it to see if it is tight. *Use a small hammer or a screwdriver to tighten the hinges or hardware using the same method that you used to secure your door. Place your hammer or screwdriver against the upper edge of the door, and hold the hammer in your hand with two knuckles touching. *You may notice screws loosening up at the bottom of the door when you place it on a stable surface. Determine how much to tighten to make sure that you are not wrong.
If you can move it upward, the the hinges are probably loose. Use a screwdriver to tighten the screws holding the hinges in place.