Well it’s back again.
I don’t know what the support team have done, but they did it.
Thank you WordPress support team if you read this.
Thanks BioTeck for your help.
It work for a while after that i have this message : You have failed to authenticate with the WordPress.com API.
Aggghhhh!
The “WordPress.com Stats” plugin gives me this answer “Your WordPress.com account, is not authorized to view the stats of this blog. “
It’s simple i have no more stats in my blog!!!
What should i do now?