We have water stains in the ceiling drywall underneath this small section of roof.
I suspect it's due to the loose metal that's on top of the shingles. The fasteners on the top of the metal are all sealed still, but the metal literally lifts up by hand.
In the image, a gap on the left side is clearly visible. I suspect the water is entering through the nail holes, but I'm not 100% sure.
How do I properly fix this? Is there a certain "maintenance" required with this metal piece?