My ads are on hold but were previously active

My app’s ads were active and progressing normally. I wanted to update and I brought some features to my application. I tested it myself before releasing the update and found that I had no ads. the application was kicking me off the application.
Then I looked in settings and saw that my ads were put on hold How can this be?

(By the way, when the new features I brought failed, I replaced the googleservices.json file with the same and it was fixed. Could it have something to do with this?)

Is your app uploaded/available on play store?