If a product message is not displayed on the product page, check the following causes in order.
To display product messages, the app embed must be enabled in the theme used by your online store. Referring to the following image, go to Shopify admin → Online Store → Themes → Customize → App embeds and enable RuffRuff Order Limits.
Product messages are displayed on the online store side, so if the target collection is unpublished, the app cannot reference the collection's information and cannot display the message. Purchase limit checks, on the other hand, are performed on the server side, so the limit still works even if the collection is unpublished.
Do one of the following.
Publish the relevant collection
Remove that collection from the rule's eligible items, and either specify the products directly or specify a published collection
Eligible items, collections, and product tags for a rule are each limited to a maximum of 50 per rule. If you set 51 or more, the product message will not be displayed for the items beyond the limit. Reduce the count to 50 or fewer.
If the problem persists after checking the above, contact us through the inquiry form. For our investigation, please let us know the title of the relevant rule, the URL of the product page, and the name of the theme you are using.