On August 17, 2011 at 16:33, Trunk-Slammer -Supreme said...
A lot of times this problem is exacerbated by an uneven wall.
Seems like the sheet rock joint is quite often located near the same level as the keypad, and that makes for an issue.
Maybe a dab of adhesive silicon caulk would work?
If not:
A very, very, tiny drop of superglue might hold the cover in position and still allow it to be removed at a future date if need be... And I do mean a VERY TINY drop...
Or a couple of layers of really sticky double backed carpet tape...