Don't trigger the function that include admob command on android phone when I build

I have a game that I want to release for play store. But I've been having problems with ads for a few days. When my interstitial ads are closed in the Unity editor, the onClosed event trigger in and switches to the relevant scene automatically. But when I get the build for android, this event is not triggered on the phone, I stay on the same scene when the ad is closed. To turn it off, I have to press the relevant button again. As I said, everything is as it should be on the computer -I have set up my related events properly and it is working as it should on the computer. I want it to work the same way on my Android phone.