This integration was replaced by Facebook conversion API because Facebook decommissioned the old API.

“Starting with Graph API v17.0, the Offline Conversions API will no longer support offline events. Graph API v16.0 is the last version that supports offline events. We anticipate that the Offline Conversions API will be discontinued in the third quarter of 2024.

In February 2023, we announced that the Conversions API now fully supports offline events. We recommend that advertisers use the Conversions API for new integrations. We also recommend that advertisers with existing Offline Conversions API integrationsconvert their integration into a Conversions API integrationbefore the third quarter of 2024 and not update their Offline Conversions API until they have successfully done so. Learn more aboutthe Conversions API."

IN “Facebook Webpage"