To connect your Instagram Pixel to the UpStackified Shopify app, you can follow these steps:

1. Log in to your Facebook Ads Manager and navigate to the "Events Manager" section.

2. Click on "Connect Data Sources" and select "Web."

3. Choose "Facebook Pixel" as your data source and click on "Connect."

4. Enter a name for your pixel and click on "Continue."

5. Select "Shopify" as your platform and choose "Connect."

6. Follow the prompts to authenticate your Shopify account and grant permission to Facebook to access your data.

7. Choose the Shopify store you want to connect to your pixel and click on "Connect."

8. Once your pixel is connected, you can start tracking events on your website and use them to create targeted Facebook and Instagram ads.

Note: Instagram uses the Facebook Ads Manager for advertising, so by connecting your Facebook Pixel to your Shopify store, you'll also be able to track events and create targeted ads on Instagram. Once your Facebook Pixel is connected to your Shopify store, you can also connect your Instagram account to your Facebook Ads Manager and start creating Instagram ads from there.