here is the comment I use, if interested:
Several areas of the roof have what appear to be wrinkles in the shingles. This can be caused when the underlayment is not installed flat, or when it gets rained on before the shingles are installed. This can cause the tar paper to wrinkle, and the shingles are then unable to lay flat against the plywood.
This can cause premature aging, and can cause some of the edges of the shingles to stick up at the lower edge, also called “fish-mouthing”. Shingles that are not laying flat will also make them more prone to wind uplift, and moisture intrusion from wind driven rain. This also prevents the built in tar strip from sealing onto the shingle below.
Recommend roofing contractor evaluate and correct as needed.