If you see "Admob not found" pop-up in your app,
please make sure that you have added google-play-services-ads module (and all other modules for correct SDK work) to your project. Here you can find instructions for native Android: https://www.appodeal.com/sdk/documentation?framework=1&full=1&platform=1#h2num_5le02memu
Here are the instructions for Unity: https://www.appodeal.com/sdk/documentation?framework=2&full=1&platform=1#h3num_mbf3f960f