UPDATE: The issue with Channelytics and Milestones is now resolved. We appreciate your continued support!
We are aware of an issue affecting Channelytics and Milestones where the Channelytics graph is blank or all account Milestones reflect-1. We sincerely apologize for the inconvenience as we understand how important it is to have our tools functioning properly. We are working on getting this resolved as soon as possible. You may follow this article for further updates.
Thanks so much for your patience.