Open the UTM Integrations page, find your project under My projects and click How to integrate. The Webhook section shows your project's unique URL with a copy button, and the instructions change depending on the platform. Examples: in Hotmart, paste it in the approved purchase webhook field (version 2.0) for all products in the account; in Kirvano, go to Apps, then Webhooks, and select the sales events; in Cakto, go to Integrations and Webhooks; in Ticto, go to Tools and Webhooks using JSON format, version 2.0; in Monetizze, go to Tools and Postback; in Perfect Pay and Lastlink, setup is per product. Always select the approved sale, refund and chargeback events so your numbers are correct. Many platforms have a shortcut button in the Ads Editor panel that opens the right page.