To activate the app embed block for Magical Fees:
In your Shopify admin, go to Online Store > Themes.
Find the theme you want to edit and click Customize.
Click Theme settings.
Go to the App embeds tab.
Find Magical Fees and click the toggle to turn it on.
This will make sure the app works as expected on your store.
If you’d like to see a walkthrough, you can watch the quick video below: