No ads after publishing on Google Play?

Question

Android

Both in the console in Unity and with the apk file installed for the test on Android, advertising works fine, but after publication in the Play Market, advertising is not displayed.

Answer 1

According to the new rules, ads are shown only after requests begin to arrive))
You just need to wait until 5-6 people start playing your game.
I have one game only recently started showing banners, when the game began to be downloaded by 5-6 people (a week has passed) people per day (failed game)

Answer 2

And what is the advertisement? Admob? Test banners or already real ones?