So, this is not like other topics in the community where ads are not showing because of blocks or admob account mistake.
My app was displaying ads perfectly and I was getting daily impressions from 5k-20k. The daily earning was also 2-5$ but suddenly after a week or two of my account the ads disabled. The error code is 3. I know the error is because of inventory lack but I think there is something else. In one day the ad requests are dropped from 1000’s to 100’s. Including me hundreds of people are facing the same problem and no reply from admob.
I just want to know that have anyone experienced the similar problem or you can tell me any solution.