In order to get the IDFA you need to allow tracking on first launch. If it’s showing you all zeros turn on tracking for the app in iOS settings. The App Store listing should say as much. Instead, it has a screenshot with the app showing all zeros for the IDFA.
None of the apps that supposedly give ID FA numbers work any longer with the new iOS upgrade. This is the fifth one I’ve downloaded and it gives me all zeros just like all the others. I have seen other folks posting about this as well. I have used it prior to the update to get the number and wish I would have written it down.
