> For the complete documentation index, see [llms.txt](https://zotek.gitbook.io/facebook-multiple-pixel/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zotek.gitbook.io/facebook-multiple-pixel/hot-topic-and-troubleshooting/pixel-issue/meta-pixel-helper-event-display-limitation.md).

# Meta Pixel Helper Event Display Limitation

Meta Pixel Helper is an extension that can detect rowser events sent by our app to Facebook. It helps you easily check whether the events set up through our app have been accurately recorded.

{% hint style="warning" %} <mark style="color:orange;">Why are the</mark> <mark style="color:orange;"></mark><mark style="color:orange;">**InitiateCheckout**</mark> <mark style="color:orange;"></mark><mark style="color:orange;">and</mark> <mark style="color:orange;"></mark><mark style="color:orange;">**Purchase**</mark> <mark style="color:orange;"></mark><mark style="color:orange;">events not showing up???</mark>
{% endhint %}

Because those two events are sent only as **Conversion API** ([server-side events](https://zotek.gitbook.io/facebook-multiple-pixel/getting-started/how-zotek-works-track-server-side-or-browser-side-data)~~)~~, the Meta Pixel Helper won’t be able to detect or display them. However, rest assured that Conversion API is designed by Facebook to address the limitations of traditional Meta Pixel, which can be completely blocked by Ad Blockers and iOS 14.&#x20;

A