How to track revenue of an user download app from custom campaign URL ?

[QuangBinhDinh]

My React Native app is already integrated with react-native-firebase/analytics, and Firebase tracks revenue of my app very well. But lately I came up with a new problem: tracking purchase of user who download my app by clicking custom campaign URL navigate to my store (created by GoogleAds). I already read some documents about it (https://support.google.com/analytics/answer/1033863?hl=en#zippy=%2Cin-this-article) but seem I can't figure the right way (maybe using deep linking for my custom URL and then log something with the campaign ID when user open the app? ) So I put my question here and hope someone can help me step by step to achieve this. Thank you !

[QuangBinhDinh]

Any updates ?