Where is MaxTraffic data?
MaxTraffic is logging data in Google Analytics by using Events. To see this data, go to:
Behavior > Events > Overview
The default report will look something like this:
How to get more detailed event info?
In the bottom of report, you can see Event Category:
But you can also switch to Event Action - now you will see Impressions, Leads, Clicks from MaxTraffic banners.
You can also go to Event Label - and here you will see all banners that got impressions:
Now you can go into more details by generating reports that you are interested in - for example, checking from which traffic sources leads were generated etc.