Hi Furkan,
Thank you for bringing this issue to our attention.
First off congrats and best of luck to your apps. Also just to let you know that this forum is for helping people with implementation and setting up of the AdMob SDK. Which from what I can tell, looks to be working just fine.
We are not fully able to respond on what will get you banned. But we will always recommend that you follow Google best practices for displaying ads. And UX best practices for frequency of ads being shown to users. As such there is nothing that forbids you from using your own app. We would just recommend that you do nothing that could be mistaken by the systems.
Regards,
William Pescherine
Mobile Ads SDK Team

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