Joe, if this occurred suddenly, during your company's stay, it's likely that it's a roller that's been put off track.
When the door is almost closed, if the gap is wider at the bottom than at the top, it should be the latch-side roller that is off. You might try:
1. On the latch edge of the door, down near the bottom, there's likely a small hole or hole covered by a cap. Remove the cap, if needed, and using a phillip's screwdriver locate the screw inside and back the screw off 4 to 6 full rotations. Remember how many turns you make.
2. Put a block (2x4 or similar) in the bottom jamb behind the door. make it long enough to hold the door out a ways, but short enough you can position yourself in the jamb facing the latch edge of the door and get leverage.
3. Stand in the jamb with your back to the latch jamb, door opened against the block, and try tilting the door upward (pivoting off the block).
4. Tilt the door up, then let it back down and try the door. You may need to do this a couple times, until the door seems to roll easier.
5. Tighten the adjustment screw the same number of turns you used before to loosen it. That should take care of the problem.
Do this process in reverse (block at the latch side) if the gap at the jamb was larger at the top, instead of the bottom.
Tilting the door in this way will be less of a strain than picking it up, but you may still want to ask a neighbor or family member to help if you think it might be too strenuous for your condition.
This method is pretty universal, but being a hurricane-rated door, it's possible it may work differently and someone else here may be familiar with them and have other advice. Best of luck-