Protect the shower or tub from scratches with a drop cloth.
Shower door needs adjustment.
Replace the shower door and tighten the newly cleaned screws.
Since they do not have a frame the track or hinges must be attached directly to the glass or at least appear to be.
If you need to lift or lower your hinged shower door you can move the rollers in the top to allow the door to swing higher into the opening.
This should fix most of the hinged door issues.
Frameless glass shower doors can hang from an overhead track or from side hinges.
Determine the need for adjustment.
Frameless shower doors consist of tempered glass with two or three hinges at one side.
A quick adjustment of shower door level when it won t close.
Look at the rollers from inside of the shower.
Actually the hardware usually clamps the door when you tighten the screws and a rubber gasket between the hardware and the door prevents damage.
Unscrew the guide at the lower edge of the sliding door.
A dragging shower or bathtub door can permanently damage both the door and the track if ignored for too long.
Learn the steps needed to fix it and get it running smoothly again.
If your shower has a level adjustment bar like this one you will want to watch this first.