If you're using the Preorder Pro + Back in Stock app and changes aren't showing on your storefront, it's likely the app embed hasn’t been enabled.
Here’s how to check:
In your Shopify admin, go to Online Store > Themes.
Click Customize next to your live theme.
In the theme editor, click App Embeds on the far left.
Make sure the Fortescue Preorder App toggle is turned on.
Click Save, then refresh your storefront and check the product page again.
The app embed must be turned on for any of the features to appear.