First, go to your Facebook Business Manager.
Next, click on Business Manager and go to “Pixels.
At the right-hand column of the interface, you’ll see your Pixel ID right below the account name.
Copy that number and keep it in a text editor.
Next, let’s go to your Shopify site and log in there.
Go to “Online Store” > “Preferences.” Scroll down until you see “Facebook Pixel ID.”
Enter or update the Facebook Pixel ID with the number that you’ve saved.
Now you’ve updated your shopify store to have the right Facebook Pixel ID
Let me know if this fix it
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