As some of you already noticed and contacted us regarding this, some users are being displayed erroneous statistics based on their timezone. For example, users that have a negative timezone (GMT-1, GMT-2 etc.) will have the statistics displayed one day before the actual day. Users that have a positive timezone (GMT, GMT+1, GMT+2 etc.) will not have such issues. This is happening because, for a faster loading time, our statistics feature is counting the date only, not the hours and minutes. So for example, if you are creating a banner on January 1st and if your timezone is negative, your statistics for January 1st will be displayed on December 31st.
Even though the loading time is faster this way, we are willing to sacrifice that faster loading time in order to offer more precise statistics for all our clients, no matter of their timezone, which is why we will be making some changes to our statistics functionality in the near future.
We apologize for the inconvenience and we thank you for your understanding.