I'm developping an App by my own (android only) and after 1 month on google play i grew the daily active users base from 100 to around 300 users.

The user avarage engagement kept around 15 minutes/day (those data come from firebase dashboard)

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But on last days my admob revenue reduced to lower than half

I have 2 adunits in this app: 1 for a banner, 1 for video reward

During the whole month the banner got around 0.25 and video reward around 1.90USD RPM

all this changed to 0.11 and 1.11USD RPM respectivelly

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Although the user growing happened slowly during the month... the admob revenue dropped at once, from one day to another

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https://preview.redd.it/3iy5akaoyjn11.jpg?width=1831&format=pjpg&auto=webp&s=492e014b25a170281ef6631e3965bafb898e0436

There was absolutelly no change in app that could explain this, the only thing that happened was I added some in-app products (and made few sales) and I connected the admob app with the play store link (I still dont know what is the point of that the only change i saw was the admob page now shows the icon of my app)

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I sent some support requests to several google products all of them came with very stupid and generic responses most of all suggesting i should run an ad campaing to grow my user base

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I was able to grew the user base during the month thanks to an ad campaing (ran out of google companies)

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I made one spreadsheet with data from admob and firebase if someone can look the data and give me some insights

https://www.dropbox.com/s/ta8m2kfyxs0wcbx/problema.xlsx?dl=0

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I really need help, on top of my mind the only thing I can think about this problem is like google has some kind of "special support" to micro apps in order to motivate them keep developing, once i reached the score to be classified as "small app" google removed any benefit or even injected some dificulties in order to force me use their services to keep growing

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