codah OK yes cranberrys is the one to use. I'm taking screenshots of how I have it I'll update this post with this in a little bit(updated). You should get one if you request it sometimes it takes a couple seconds(5-20ish) to load it depend on internet speed. Both games in my signature use banner and interstitial if you want to see what it should look like.
Project window admob selected
put this at in start of layout you dont have to put it in a subevent like I did it work placed in start of layout Ijust have the option to but a IAP to remove ads
I have this placed in my first layout(loadngscreen) I dont know if thats wheres it's supossed to go but it works