Branch.io metric issue

We've established branch.io links that our ad networks utilize to direct users to our mobile app. We've also implemented several metrics tags. When we review our metrics dashboard, we can identify which ad network partners are successfully driving users to sign up for our app. However, we've noticed that certain metrics beyond the initial sign-up are not being populated.

We are looking for someone to help us find why some metrics are under unpopulated partners section.