Overhead Trim at Front Door Fell Off

Walked in front door, closed door (not hard either), after a minute, the overhead trim fell to the floor. It was only held on by short staples. DH was able to straighten some of the staples and hammer the header back.

Any recommendations from the factory for a better way to secure this header that might ensure it stays where it is supposed to?

Just another in our continuing long list of constant repairs to this 2006 unit. It just seems that every time we move this unit, whether it is from site to site in the same park or taking a trip, something breaks. Does it ever end? Still waiting for parts to arrive at Camping World in Colorado Springs (Fountain) to fix front landing gear!