How to activate the debug mode?

If you need to verify how your campaign is doing in a specific manner, you may activate the "Debug Mode". You will then have a lot of information about all the automatic launches: if the visit successfully found an element, how long the visit lasts, which parameters are used, etc. 

To activate the debug mode of a campaign, you first need to activate the expert mode. Then go to the "Settings" page of your campaign. A new line "Debug Mode" will appear. You just need to activate it: