Within campaigns you can determine what traffic will reach your landers.
Go to Campaigns > Edit Campaign > Filters tab.
Select Filter Mode
Active - applies filter settings you'll be setting further in filter section.
On High Alert - this checkbox enables a special filter mode. When an unwanted visit is tracked, the five next visits will be also be sent to the safe page.
Select Device Filters
Add or Remove filters
Facebook Prefetch Filter. Facebook Android app generates a lot of preview traffic, loading page before user actually clicked the ad. If you switch on this option, the Facebook app will be forced to load your lander on a real ad click and the preview traffic will not be displayed in your statistics.
Filter IPv6. Use this option to send any IPv6 traffic to the safe page.
Filter Empty Referrers. Use this option to send to incorrect traffic URL any traffic with empty referrers.