Jungle Records review for Google & YouTube

Great attempt, but something's broken. Our store says: "78 products didn’t publish to Google. View these products to see why." So I go to products and they say: "GTIN is required for this product". But our products DO have GTINs (UPCs) - they are LPs and CDs. All correctly entered in the barcode/GTIN box in our product page. A basic field that Google doesn't pick up from Shopify! Looking forward to it getting fixed....?