Introduction
In this article, you will learn how to resolve one of the most common issues when integrating Yay! Forms with Meta Ads: your form submissions are being tracked successfully (the YFSubmit event shows a "success" status in Yay! Forms logs), but the Lead event simply does not appear in Facebook Events Manager — which means your ad campaigns optimized for Lead conversions are not receiving any data.
The good news is that this is usually not a technical problem with your pixel installation. In most cases, Meta is automatically blocking your custom events because they haven't been reviewed and approved yet. This article will walk you through the exact steps to unblock these events and get your Lead tracking working properly.
Why This Happens
When a new custom event is sent to Meta for the first time (such as YFSubmit, YFStart, YFView, or YFAnswer), Meta does not activate it automatically. Instead, it places the event in a "Blocked by Meta" status until the pixel owner manually reviews and confirms each event.
This is a security and compliance measure by Meta to ensure that advertisers are aware of and consent to the data being collected through their pixel. Until you approve the events, they will not appear in your event activity, and they cannot be used for ad optimization, custom audiences, or conversion tracking.
Step-by-Step Guide
Step 1 — Open Facebook Events Manager
Go to the Events Manager by navigating to the following URL in your browser:
https://eventsmanager.facebook.com
Once there, select the Pixel / Data Source that is connected to your Yay! Forms integration. You can identify it by the name you assigned when creating the pixel, or by checking the Pixel ID configured in your Yay! Forms settings.

Step 2 — Navigate to the Settings Tab
With your pixel selected, click on the "Settings" tab in the top navigation bar of your data source panel.
Scroll down the settings page until you find the section called "Manage Event Blocking".

Step 3 — Click "Review" (Analisar)
Click the "Review" button next to the Manage Event Blocking section.
A confirmation pop-up will appear explaining Meta's Business Tools data sharing terms. This pop-up informs you that you should not share data containing sensitive information (financial, health, consumer reports, etc.) and that by confirming, you agree to only send events that comply with Meta's terms.
Read the terms and click "I Confirm" ("Eu confirmo") to proceed.

Step 4 — Review the Event Status List
After confirming, you will see a list of all custom events associated with your pixel and their current statuses.
These events will show as "Inactive" and "Blocked by Meta" with the source listed as "Site."

Step 5 — Confirm Each Event
For each event you want to activate (especially YFSubmit, which is your Lead event):
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Click on the event name to open its detail panel.
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In the detail panel, you will see two options:
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"Confirm the custom event" — This allows the event to be used with your ad resources (campaigns, custom audiences, conversion tracking).
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"Block the custom event" — This permanently blocks the event from being used.
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Select "Confirm the custom event".
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Click the "Confirm" button at the bottom of the panel.
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Repeat this process for every event you wish to approve.

Step 6 — Verify Events Are Active
After confirming all desired events, return to the Events Manager overview (main tab). You should now see:
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The events listed as "Active" instead of "Blocked by Meta."
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Event activity starting to appear in the graph as new form submissions come in.
To validate everything is working, submit a test form and check if the event appears in the event activity graph within a few minutes.
Important Notes
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Processing delay: After approving events, it may take up to 20 minutes for them to start appearing in Events Manager. Don't panic if they don't show up immediately.
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Event quality: Once active, monitor the Event Quality Score in Events Manager. A higher score means better data matching and more effective ad optimization.
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No campaign changes needed: If your campaigns were already set to optimize for the Lead event, they will automatically start receiving conversion data once the event is unblocked.
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Future events: Any new custom events sent by Yay! Forms in the future will also need to be approved through this same process.
Still Not Working? Additional Troubleshooting
If the events are confirmed but still not appearing after 30 minutes, check the following:
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Verify your Pixel ID — Make sure the Pixel ID configured in your Yay! Forms settings matches the one shown in Events Manager.
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Use Meta Pixel Helper — Install the Meta Pixel Helper browser extension (available for Chrome) and visit your form page. The extension will show you in real-time which events are firing and if there are any errors.
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Test Events tab — In Events Manager, go to the "Test Events" tab, enter your form URL, and open it in a new browser tab. Any events triggered will appear in real-time, allowing you to debug the integration.
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Contact support — If the issue persists after all these checks, reach out to Yay! Forms support with your Pixel ID and form URL for further assistance.
Conclusion
In this article, you learned how to diagnose and fix the most common reason why Meta Pixel Lead events do not appear in Facebook Events Manager when using Yay! Forms. Let's recap what was covered:
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The root cause: Meta automatically blocks new custom events until they are manually reviewed and confirmed by the pixel owner.
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How to access the settings: Navigate to Events Manager, select your pixel, and go to the Settings tab.
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How to unblock events: Use the "Manage Event Blocking" section to review, and then individually confirm each Yay! Forms event (YFSubmit, YFStart, YFView, YFAnswer).
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How to verify: After confirmation, check that events appear as "Active" and test with a form submission.
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Additional debugging: Use Meta Pixel Helper and the Test Events tab if issues persist.
Once your events are confirmed, your ad campaigns will start receiving Lead conversion data automatically, and you can fully leverage Meta's optimization algorithms to improve your campaign performance.