All banners are manually approved. This procedure takes place once every day including week-ends and public holidays.
However most of the time we do approve banners 4-5 times every day.
If you banner is not approved - then please check (this is what we do);
1) Is your banner in compliance with our guidelines?
2) Is the click URL working?
3) Is the landing page loading in a new window?
If the above is working your banner usually is approved within hours (during business hour).