Getting the “App Block Not Added” Error When Adding Our Date Picker?

If you're seeing the error below when trying to add the Flare delivery date picker to your store:

"App block not added. Liquid templates don’t support sections and blocks."

Why This Happens

This usually means your store is still using an older Shopify 1.0 theme. Shopify 1.0 themes don’t support app blocks — which is how Flare and many other modern apps add features to your store.

How to Fix It

To use app blocks (and unlock many speed and conversion benefits), you’ll need to upgrade to a Shopify 2.0 theme.

Benefits of Shopify 2.0 Themes

• Support for app blocks and sections everywhere
• Better performance and faster loading times
• Easier customizations with the theme editor
• Improved SEO and conversion optimization features

Shopify offers many free and premium 2.0 themes on the Shopify Theme Store.

Next Steps

1. Upgrade your theme to a Shopify 2.0 theme - Shopify have a migration guide here
2. Reinstall or open the Flare app.
3. Add the delivery date picker block with no issues!

Updated on: 25/06/2025