It seems that someone clicked 9times on Adsense. Is there anyway to see who done that (Blogger)? Should i report it to google?
But yes - DEFINITELY report to Google. It sounds like someone has been mischief making and deliberately clicking on your ads. You must inform Google that you suspect invalid click activity - if you don't they will almost certainly ban you within a few days. It would be a shame to get banned when your other channel is performing reasonably.