Just wanted to add my single Cent.
For me it´s IVAO-traffic that does not show on any map or chart. No matter what I try, following all the good advises I could find.
I switched to P3D4.3 from FSX two weeks ago and was used to the good old FS-Commander, which showed all the online traffic you wanted. Now I am building up the whole Sim again and was really looking forward to EFB2.
I hope you can get the problem solved and can provide a sound solution for the online-community. Otherwise EFB2 is a wonderful tool, but to a certain degree useless for online-flying. One has to see the traffic. I can only see the active FIRs and other ATC, but not a single a/c. The connection to IVAO seems to be etablished in my setting, but where is the traffic?