nee your help pls. After updating to 2.15 suddenly a few (not all!) visitors are counted double or more or the visits are being split up into e.g. several visits. Thereby the stats are getting wrong since too many visits are being created. The error occurs from clicks via paid google ads. as far as i can see.
Nothing had been changed in adwords incl. the campaign parameters but for some reason Piwik now splits the visits. Pls see attached example.
We had a lot problems with click fraud in the past but this seemed to be over. Maybe we have this problem again but the different refferals are strange. Why is it google and / or our own domain sometimes?
Any idea / hint / help appreciated. Thanks beforehand.