Sorry to bee so harsh but this plugin - in special meaning the pro-version - is not worth the money.
Every update brings some problems like no more click-tracking, then all ads are deactivated, you have to keep your pro-version update-to-date by yourself (not automatic updates, no messages) and the help in the forum is more or less not helpful.
The good thing: it shows ads, rotates them and should count clicks when fully working. But this depends on the version.
My resume: if you need a plugin to really track all impressions, clicks and stable enough to sell ads to clients - don't buy the pro version. Use another plugin.