Scenario

If you've added your Facebook Pixel to your event, then it's possible you may start receiving the “Your pixel is being used on new domains” error from Facebook. This basically just means that Facebook have detected Pixel traffic coming from a new domain and they want to check with you to see if it should be allowed or not.

Quick Start
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If you are seeing this error, the quickest way to solve this is to add heysummit.com to your domain allow list in Facebook. For more information on how to achieve this, please refer to Facebook's guidance directly.