If you're seeing a discrepancy in the number of emails sent, clicked, or opened in your Campaign Statistics, don't worry. This is only a temporary display issue. If your Campaign is in your Sent tab, you can trust that your Campaign has sent to your clients successfully even though the numbers are not accurate. We've been working on a lot of refactoring and enhancements to the Campaigns section, and a developer is currently working on fixing the statistics and metrics area. The fix is currently being reviewed by our development team, and then will go through extensive testing. Once released, future metrics will be displayed correctly and gradually your older metrics will catch up.