Hello there,
You can have more than one ad in the same Activity, but only one should be on the screen at any given time. If you're using a RecyclerView and mixing ads with content, just make sure you have enough space between ads that they don't share the screen. When implementing ads in your applications, it is very important to be mindful of our Policies , as well as our Implementation Guidelines to avoid any issues.
That said, this forum can only cater to technical questions specific to the code implementation of the Mobile Ads SDK. I suggest that you raise any concerns about permissible actions to the Product Support Team as they are the appropriate team to assist you on this.
Regards,
Deepika Uragayala
Mobile Ads SDK Team