Hello everyone again 
Let me explain my problem.
Checkd stat for this month on one of my campaigns and find these:

Does anybody knows what kind of connection type can be "Unknown"? I'd like to cut it somehow)
And one more noob question is "Cable/DSL" = WiFi? Cause I don't see Wi-fi connection type in my stat.
The information about the connection type you see on your tracker depends a lot on the IP database the tracker uses. Maybe
As for the Cable/DSL, it is mostly home connection either WiFi or LAN connection.
this is something i always see in my campaigns with different traffic sources,
tell me your traffic source here
As it's not available to target specific connection type on TJ ,
what i usually do in this kind of cases , i redirect all this non converting (or low converting) traffic to a smartlink ( i suggest Clickdealer) and this way you will not make profit there mostly but at least you will have a better negative ROI there
Another solution to this is to sell this traffic , this is something i know plugrush can do for you (contact them to do so)
i struggled a lot with these issues and these 2 options is the only options
good luck