Product.PurchaseError.invalidOfferSignature The offer signature isn’t valid. Declarationcase invalidOfferSignature See AlsoGetting Purchase Error CodesProduct.PurchaseError.invalidOfferIdentifierProduct.PurchaseError.productUnavailableProduct.PurchaseError.purchaseNotAllowedProduct.PurchaseError.ineligibleForOfferProduct.PurchaseError.invalidOfferPriceProduct.PurchaseError.invalidQuantityProduct.PurchaseError.missingOfferParameters