Note: this feature is obsolete as of October 2023. As of the October release the app always uses App Embeds to enable the app.
Online Store 2.0 App Embeds
Shopify's Online Store 2.0 (OS 2.0) themes support App Embeds.
App embeds are the default way to enable app components in a theme.
Configure Discount Ninja to use App Embeds
Open Discount Ninja
In the menu navigate to Settings > Assets > Install script & assets
Select the option [Recommended] App embed
Follow the instructions in the app to enable the App embed
Releases
Discount Ninja provides two App Embed options.
[RECOMMENDED] Stable release: enable the stable release (and disable the latest release) to use the latest stable release of the app.
Latest release: enable the latest release (and disable the stable release) to get early access to new features and recent fixes.