Check these first
Duplicate Product nodesMultiple plugins can publish conflicting Product JSON-LD blocks.
Variant priceVariable products need clean low/high price handling and selected offer consistency.
IdentifiersBrand, SKU, GTIN, and MPN should match the real catalog source.
PoliciesShipping and return signals should not contradict checkout or policy pages.
ProductProof workflow
Run the public scan first. If the score shows template-level problems, use the paid audit to turn those findings into a developer-ready backlog.