Mazda 5 door problem

We have a Mazda 5 and the rear door is sticking and won’t close properly, could it be a fuse?

Doubt if it is a fuse. The door should shut manually even if it has electrical assist. If the rear side door, look for something that is binding in the tracks. Sometimes that happens and if you can manually align whatever is binding, it can be freed.

If you can’t figure it out, then see a reputable body shop who can help you out.

Only if you have one stuck in the door jamb.

Exactly
Carefully examine the door’s tracks for an obstruction. Most likely, a small object is in the track, and this is causing the problem.