Admob ads not loading - Failed to load ad: 0

Question

I am trying to load Admob Native ads. Previously (before app was updated) ads used to show but now they are not showing. I have posted the code, xml and the Logcat below.

Answer 1

In my case missing payment information was an issue. When you login to Admob dashboard you will see notice over there which says ads won't work until we add payment details.