Campaign Hasn't Served Impressions
When campaigns are approved by our campaign review team, we pre-charge your first week’s budget to start your account balance. Every week, your previous seven days of ad deliveries will be deducted from your total balance. We will then charge your credit card to replenish your account balance back to its original weekly budget level.
Invoice Was Larger then Usual
Most of the time, charges will match up with weekly spend. However, when activity on your account affects your required balance, you may be charged more or less than your spend for that week. To find out what factored into the amount you were charged, review that week's invoice in Billing History.