Thank you for contacting us.
Google introduced changes to the API earlier this week and as a result you are experiencing issues with the Analytics module within Sitefinity. We are working on a fix, in the meantime, please, access the analytics data directly on Google's website.
Thank you for the understanding.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items