Their stats have never been real time. They lag up to 2 days for me sometimes. It's a bit annoying when you are trying to fine tune things but it doesn't affect my checks which still arrive like clockwork.
My last two days have been the best with them for several days.
It has been stated numerous times (search old threads) that their Geo stuff has been hard hit by the much higher than expected demand since most Webmasters have found they basically triple conversions.
I understand they are bringing more servers online as soon as possible within the next couple weeks to cope with the higher than expected success of geo targetting. I am not using geo targetting with them until the new servers are up.