After applying the customer's allergens, dislikes, category preferences, the subscription's Plan Categories and portion size, no meal on that date's menu was left to choose from. Fix it by adding suitable meals to the menu, relaxing the subscription's Plan Categories / Portion Size, or reviewing the customer's profile restrictions, then run auto-select again or pick meals manually. Other messages: "No Subscription Checkout" / "No Subscription Checkout Day" mean the original plan order or its delivery-date record is missing (contact support); "No meals added for subscription" means the category quotas could not be satisfied; a payment error means an extra (for example a surcharge meal) could not be charged.