Once a Spotlight Subscribe form is enabled and set as your default Spotlight Subscribe form or assigned to a post category with Category Targeting, the subscribe form will show 10% of the way into the main content of your posts:
We will continue to A/B test different placements for this form to ensure it's being displayed in the best place for conversion.
Note: If you have already subscribed to your Grow Spotlight Subscribe form, you won't see that specific Subscribe form on your posts. Try checking your site in an incognito or private browser window and you should be able to see the form displaying!