Facebook ads purchase pixel (meta) is not triggered on purchase

[thiagorodox]

Hello, I configured the customer pixel following the documentation below:
https://help.shopify.com/en-US/manual/promoting-marketing/pixels/custom-pixels/code

But the Purchase event is not enabled when we make a purchase.

This is the code that is on Shopify:

!function(f,b,e,v,n,t,s)
{if(f.fbq)return;n=f.fbq=function(){n.callMethod?
n.callMethod.apply(n,arguments):n.queue.push(arguments)};
if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
n.queue=[];t=b.createElement(e);t.async=!0;
t.src=v;s=b.getElementsByTagName(e)[0];
s.parentNode.insertBefore(t,s)}(window, document,'script',
'https://connect.facebook.net/en_US/fbevents.js');

// replace YOUR_PIXEL_ID with the pixel ID provided by third-party
fbq('init', oculted);

// integrate third-party pixel tracking
analytics.subscribe("page_viewed", event => {
fbq('track', 'PageView');
});

analytics.subscribe("product_viewed", async (event) => {
fbq('track', 'ViewContent', {
content_ids: [event.data.productVariant.id],
content_name: event.data.productVariant.title,
currency: event.data.productVariant.price.currencyCode,
value: event.data.productVariant.price.amount,
});
});

analytics.subscribe("search_submitted", async (event) => {
fbq('track', 'Search', {
search_string: event.searchResult.query
});
});

analytics.subscribe("product_added_to_cart", async (event) => {
fbq('track', 'AddToCart', {
content_ids: [event.data.cartLine.merchandise.productVariant.id],
content_name: event.data.cartLine.merchandise.productVariant.title,
currency: event.data.cartLine.merchandise.productVariant.price.currencyCode,
value: event.data.cartLine.merchandise.productVariant.price.amount,
});
});

analytics.subscribe("payment_info_submitted", async (event) => {
fbq('track', 'AddPaymentInfo');
});

analytics.subscribe("checkout_started", async (event) => {
fbq('track', 'InitiateCheckout');
});

analytics.subscribe("checkout_completed", async (event) => {
fbq('track', 'Purchase', {
currency: event.checkout.currencyCode,
value: event.checkout.totalPrice.amount,
});
});