agree with whats been said already.
to answer the question about ponding, no account should a new roof be ponding. any new roof should be stripped off to joists and new insulation and built up with falls from the joists.
gget into the roof behind the dormer knee walls if you able an look for already leaking signs at abutments.
theres other stuff thats wrong thts not been mentioned,so as said get a inspection and report from someone competent
to answer the question about ponding, no account should a new roof be ponding. any new roof should be stripped off to joists and new insulation and built up with falls from the joists.
gget into the roof behind the dormer knee walls if you able an look for already leaking signs at abutments.
theres other stuff thats wrong thts not been mentioned,so as said get a inspection and report from someone competent