The link is broken, but I think this one could help, don't you? https://developers.google.com/app-conversion-tracking/third-party-trackers/doubleclick-integration

Hi there, I developed all architecture with Event Forwarding to send conversions (that were received by bath from e-commerce confirmation) to Meta to complete the cycle, Because I sent the server-side event of conversion, and to complete I have to send the offline conversion.But the event doesn't re...

Did you check if the FTP at SFMC has a valid token?