Insert the tip of a putty knife between the molding and the frame of the door.
How to fix a oval glass plastic door molding.
If you choose repair over replace try fixing the damage with j b weld waterweld epoxy putty.
When the molding lifts up 1 4 inch move the screwdriver to the next side.
Should you need to stain the repair or the entire fiberglass door consider minwax gel stain.
Once dry it may also be painted.
How to replace the oval glass in an entry door.
Lay the tip flat on the glass and push the tip of it under the molding rock it back and forth if necessary to get the tip to penetrate under it.
Insert the tip of a putty knife under the molding.
Tap down any loose or exposed brads holding the wood molding to the door around the glass.
Use a nailset and a hammer.
It is rated for application onto fiberglass and other plastic surfaces.