DIY does not mean vague.

Solar panels are final sale and non-refundable once ordered. If there is a shipping problem, document it at delivery, keep packaging, photograph the freight condition, and Gnomeware will work with you on the carrier or supplier path.

You are responsible for code compliance, permits, utility interconnection, and safe installation. When the job needs a licensed electrician, bring one in. Good DIY is confident, not reckless.