I also made this changes. But i still doesn't get it working. What do I have to enter here?
How you can see i have 236 attemps but 0 impressions.
I'm not sure which ID i have to enter here? I took the pub-ID from admob standing in the header next to my mail adress if I'm logged in.
Like Ed said, but it depends on your admob version of interface. if you use the old one, use the pub id, if you use the new one which you most likely do for each ad you enter add id taken from admob, example: ca-app-pub-308xxxxxxxxxxxxxxxxxxxxxxxx