Hello, I want to be able to see Subscriptions and ROAS in Ads Manager, but when I add those columns I just see a hyphen representing no data.

The advertised product is an iOS 16 and up mobile app with the Facebook SDK integrated. I can see events like Installs, Trial Starts, etc as expected. Unlike with these events, our Subscribe event is sent from our server via the Conversions API. This event is typically sent 7 after the Start Trial event, once the 7 day free trial converts to a paid subscription.

I can see that the Subscribe events are being received as expected in the Events Manager. How can I get these to populate the Subscriptions and ROAS column in Ads Manager?