Meta optimises on your sales, not on what you keep

The Arabic landing page reports the net gain, not the sticker price.

A run through the Arabic landing page, demo data: the whole page scrolled down to the offer, the order form filled in, and the confirmation returned by a mocked server.
Top of the Arabic right-to-left landing page, demo data: product photos, cash-on-delivery badge and the headline.
The offer block, demo data: the sticker price, what the parcel includes, free delivery, cash on delivery, and the order button.
The order form filled with demo data: an invented name, a Saudi mobile number, a city chosen from the list, an address; every field validated and the confirm button enabled.
The confirmation popup after a mocked server reply, demo data: the next steps, the amount due on delivery, and an invented order reference.

The problem

On cash-on-delivery affiliate offers, Meta optimises on the sale price, while the real gain depends on confirmation and delivery.

What I built

A right-to-left Arabic landing page, server functions that send each order through a relay, and a server-side Purchase to Meta valued at commission × confirmation × delivery.

Technical details

Browser/server deduplication by event ID, fbc rebuilt from fbclid
Duplicate orders blocked by an index on phone hash, referral and day
Mobile audit on 6 devices (tap targets), with LCP and CLS measured under 4G
Campaigns launched by API, created paused and activated separately

Stack

Supabase edge functions
Postgres
Node relay
Meta CAPI + Marketing API
Playwright

The result

The ROAS in Ads Manager reads directly as profitability. No fake reviews, no countdown, and a test that enforces it.

A similar project in mind?

Tell me about your business and when you need it. You get a proposal by email.

I want this system

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