I want to set up a custom conversion from Facebook ads and I need a link to the confirmation page when a student pays for the course so Facebook can track my sales. But I can't find the way to do it. Is it even possible? Or, if not, can I somehow link my custom thank you page to thinkific?
You don't actually need to do that to track conversions - if you install the base pixel code under Integrations on your admin dashboard, that will all be set up for you.