If the preorder button keeps spinning and the order doesn't go through, it usually means the Shopify product or variant isn't set to continue selling when out of stock.
To fix this:
This setting must be enabled for preorders to work when inventory is zero.
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.
Read article →App install instructionsInstalling 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 →Browse our apps on the Shopify App Store. Free to try.
Install from App Store