My AdMob ads don't show but if put someone elses ads they do
Hello, I have an issue.
I paid an app developer to develop app for me, app is almost finished but the problem is that my admob ads are not showing. I have tried creating new ones and even HouseAds but they never show up and I don't get any impressions. It might be relevant that I created my admob account couple days ago but at the same time have had adsense account for 6 years and been getting paid from it every month. The thing is he created ads through his admob account and his ads work, but mine don't. I can't find the problem, does anyone have any idea what the issue might be? I would be really grateful because this has been very confusing.