Pending (Filler Ads)
This is the money you have earned from Filler Ads. This is the total for the previous 7 days. So if you earned money on the 1st, that day's amount will be added to your account balance after 7 days (on the 8th).
This is a rolling balance, and may shift up and down as your earnings increase or pending payments are transferred to your account balance.
Pending Ad Sales
This is money from Ads that have been sold on your website. This amount is the gross sale amount and your portion is paid into your Available Balance when the Ad duration has been completed (after the Ad has expired).
Pending Ad Renewals
These are renewals or extensions for Ads you have already sold. You will see these funds move to Pending Ad Sales when the previously purchased duration expires. The more Ad Renewals are listed, the longer your Ad spots are sold.