Electric Cord Feed Cover

The plastic cover & electric cord / plug holder that's in the rear of my Elkmont has come loose. It is held on with 3 phillips head screws and caulked - I noticed that 2 of the screws had come loose and appear stripped. The cover is moving and will fall off soon if I don't take action.

What is the best approach to repair this? I don't feel like hauling this trailer 30 miles to the dealer for what appears to be a relatively minor issue.