.netxamarin.formsadmobads

Xamarin MarcTron AdMob banner is not working

In my xamarin app, i want to show a banner with MarcTron. I think I made all the steps correctly (appId, banner id, etc...) but in the page, it makes space for the banner but the banner is blank. Any Ideas? Does this lib still work?

The app id and banner id are the ones that admob gave me.

Solution
    1. I had to replace MobileAds.Initialize(ApplicationContext); with CrossMTAdmob.Current.Init(this, "my_app_key"); in the MainActivity
    2. To show the banner i had to call banenr.LoadAd();. It does not load it automatically any more.