通販で商品を購入したのですが広告とは異なる粗悪品が届き返金を ...

This appears to be a consumer dispute scenario related to misleading or nonconforming goods and refund limits, rather than a specific Japan regulation directly governing device protection plans. While the underlying consumer-protection principles (e.g., expectations set by advertising and refund/remedy rights) could indirectly influence how third-party sellers handle returns or defective goods that might otherwise be covered by AppleCare+, it’s unlikely to directly affect AppleCare+ terms such as coverage, service procedures, or pricing.