Hi,
I have a problem with display interstitials ads. For long time I used RevMob but I need try AdMob or Chartboost.
Step by step like CookBook says and... don't display 
AdMob is only black screen witch X to go back but Chartboost is very interesting.
When clik O.K. game is turned off 
Any sugestions ?
Please help 
p.s. Sorry for my English
