1. The cart is within the configured restriction range
Alert messages are displayed only when the cart is outside the restriction range set in the rule. For example, if a product quantity rule is configured to allow purchases of between 2 and 5 items, the alert message will appear when a customer tries to add 1 item or 6 or more items to the cart.
2. Display timing is set to "Checkout only"
With this setting, the alert message will only appear after the customer proceeds to checkout — even if the cart is outside the restriction range. If you want the alert message to appear on the product page or cart page as well, select Cart updated and checkout.
3. Your Shopify theme does not support alert display
Our app's alert messages follow the alert display behavior of the Shopify theme in use. If the theme itself does not support alert display, the alert message will not appear. If this is the cause, please be assured that while the alert message is not shown, the restriction is still being enforced and the order itself will be blocked.
If the issue persists, please contact our support team.