Order Printer Pro: PDF Invoice

Hit a Liquid issue with typed metafields rendering blank in our custom invoice template.

Keanu in support went into the store with collaborator access, identified the actual cause within the hour (turned out to be the top-10 pinned metafield rule), confirmed correct syntax, and pointed us to native Shopify variables we could use to free up metafield slots. Calm, precise, no scripted loop.

Highly recommended for any store doing custom invoice work.