Data from the Reports tab are displayed with a 4-hour delay, due to the fact that it takes some time to process the raw data received by the platform and make it visually comprehensible. Campaign related data (e.g., campaign results/current balance) are updated in conjunction with the reports on the Campaign tab to avoid charging you for irrelevant clicks. We suggest waiting a bit longer, like 12 or 24 hours, before checking the stats.