If the app changed for you… That is completely irrelevant to the topic of ad revenue. Maybe you responded to the wrong person. Maybe you responded to the wrong post.
But changing Reddit apps doesn’t have anything to do with giving Reddit ad revenue.
To be clear: it didn’t matter if the app you used before didn’t serve ads, since you should be using an ad blocking service making the entire topic (the OP and whatever insanity you’re dribbling) irrelevant and non-existent.