Hi Krasimir Mariyanov,
"New bundle can't be uploaded as a new release because Аppyet makes a different Key every time"
Problem, you need find way for fix that.
this is what i got from Google Admob
1. I uploaded my App in the google play store
2 I got granted to put Admob ads on my App
3. I had to create a new bundle with the ads code in my app
4. New bundle can't be uploaded as a new release because Аppyet makes a different Key every time and now i don't know how to run my AdMob ads on...