we are having a problem with the piwik campaign tracking. From the start with different display ads providers the numbers they provide about people clicking on our ads is significantly higher then the numbers recorded with piwik.
For example: For our last campaign the ads provider recorded 1228 clicks while piwik recorded 542.
Tests clicks we did where all recorded correctly though.
Does anyone have a general idea what the problem might be here or does have the same problem?