If you're using Preorder Pro + Back in Stock, this can happen if your current theme runs scripts that are not compatible with Shopify’s line-item property.
Contact the Magical Apps support team for help with theme integration. We’ll take a look and see if we can get it working for you.
Originally from our Help Center
More guides and resources related to this topic.
All new preorder rules use Purchase Options for better checkout integration and order management. Legacy Rules Legacy rules function by adding a Line item.
Read article →App install instructions Installing the app in Shopify is easy. Visit the Magical Preorder listing and click “Install”.
Read article →Yes. Any discounts or special offers you’ve set up in Shopify will still apply to products available for preorder. The app doesn’t interfere with your existing pricing rules.
Read article →No, the app does not currently support applying rules to entire collections. Rules can only be set up for specific products or variants.
Read article →No, the app does not currently support automatically launching preorders based on product tags. Preorders can only be triggered by inventory levels or manual rule settings.
Read article →Install Magical Preorder & Presale on Shopify and see the difference today.
Install Magical Preorder & Presale on Shopify