Robert, 2 sided tape or carefully drill a couple small holes( making sure not to damage electrical components) and use a couple short small screws to attach panel.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Try to find a Mr. or Ms. fix-it, and see if they can get creative with repair options.
There are a whole lot of ways to fix this, mechanical fasteners like screws, pop-rivets, etc., and chemical fasteners like glues, sealants, etc.
God bless your efforts.