Migration from Admob to Unity Ad

Hello Unitiers,

We are a small team who love coding and developing. In the past, we only work in android platform for apps and game (using Libgdx). However, we recently encounter some issues with admob, and we are sure that many of developers in this forum used to or already have the similar struggles with admob. Therefore, we decided to expand our missions and businesses to other platforms, and Unity is one of them. Today, our team have some curious question need to be taught by expert developers or special staffs from Unity.

1 - Can we use Unity ads (banner or interstitial) for Android apps (not game).

2 - How many times can a user make impression and click on ads?. We want to limit 10 impression and 10 click for each user a day, we don't want to see the same issue happen in admob when some users from some where continuously request and click on ads.

3 - And the most important question is: Do we have to use totally new information (ID, name, email, ...) to register for Unity developer ID?. We don't want to see one day all ad networks close the door in front of us because we were suspended in one networks and the other ones will follow this.

Thank and Best Regards.