Metal roof installation issues

Hi, O had a metal roof installed due to my old metal roof having lead paint. The back roof appears to have some dimples and the bottom edge does not look completely straight. There is a seam in the front porch roof that, from the front looks quite pronounced (more so than the previous one). This may be due in part to the crooked gutter, but I imagine that does not account for everything. I have attached one pic of the back roof and two views of the porch roof (one from exterior and one from interior).

I am meeting with the roofer to discuss and would appreciate any insight into the causes of these issues, whether they are just cosmetic versus something that might indicate structural issues, and what I might reasonably expect in terms the contractor being able to fix them? Thank you very much!