To solve this issue, you can follow any of these two method. Method-1: You need to use the same channel in ExchangeApp and YouTube app.
Tag: Audience settings explained
How to make permanent subscribers?
To make permanent subscribers you need to follow the below 3 steps. Step-1: Make permanent subscribers by following campaign create guideline You need to follow
How to select the correct audience (ExchangeApp | tutorial)
In this tutorial, I will explain the audience settings on the campaign creation page. Audience settings in the campaign creation page are very much important