Fix Payment Provider Issue

We're a growing e-commerce brand and need help fixing inaccurate data being sent to our Meta Pixel. The issue: one of our payment providers (Koko, a buy-now-pay-later gateway) isn't passing purchase events correctly to Meta. This means our Pixel is under-reporting or misreporting conversions, which is hurting our ad optimization and reporting accuracy. What we need from you: Diagnose why Koko transactions aren't firing accurate purchase events (or are sending wrong values/duplicates) Ensure every completed Koko order sends a correct Purchase event to Meta, with accurate value, currency, and event data Set up or repair server-side tracking (Conversions API) if needed to capture these events reliably Verify accuracy using Meta Events Manager (Test Events, deduplication, match quality) Ideal candidate: Strong hands-on experience with Meta Pixel + Conversions API (server-side tracking) Familiar with e-commerce checkout/payment event tracking Comfortable troubleshooting event deduplication and third-party payment gateway integrations Bonus: experience with Shopify and/or Sri Lankan payment gateways like Koko