Google ad manager ads note show

I made an app from kodular in which add ads from google ad manager but those ads are not showing in my app

App packeg name - com.coctacare.rjmandibhav

I have also approved my app from Kodular for monetization, still the aids are not visible.

What could be the reason ??

Why are you trying to add ads in a web view app? Website you are showing also contain ads.

I want to know whether ads of google ad manager can be shown in webview app or not