If you're using Preorder Pro + Back in Stock and new products aren’t appearing in the app right away, you may need to manually resync them.
To do this:
Log into the app through your Shopify store.
In your browser’s address bar, add
/apps/import-productsto the end of your store URL.Press Enter and the app will resync your products.
After that, your new products should show up in the app dashboard.