The ad system doesn't publish a readable sellers.json, so nobody can verify these lines. That's the ad system's gap, not the app's, so no points are deducted.
Evidence (14)
line 6 appnexus.com, 1285, DIRECT, f5ab79cb980f11d1
→ sellers_json: HTTP 403 to automated requests
line 18 appnexus.com,1985084, DIRECT, f5ab79cb980f11d1
→ sellers_json: HTTP 403 to automated requests
line 22 smaato.com, 1100039310, DIRECT, 07bcf65f187117b4
→ sellers_json: HTTP 403 to automated requests
line 23 adcolony.com, 496220845654deec, RESELLER, 1ad675c9de6b5176
→ sellers_json: returns a web page, not a sellers.json file
line 27 openx.com, 540421297, RESELLER, 6a698e2ec38604c6
→ sellers_json: HTTP 403 to automated requests
line 29 rhythmone.com, 4201299756, RESELLER, a670c89d4a324e47
→ sellers_json: HTTP 403 to automated requests
line 30 somoaudience.com, e0ac315e5cd7f6977fe44dbd2d4676ea, RESELLER, afbbacfd95716fd4
→ sellers_json: returns a web page, not a sellers.json file
line 31 startapp.com, smt, RESELLER
→ sellers_json: HTTP 404
line 32 xad.com, 241, RESELLER, 81cbf0a75a5e0e9a
→ sellers_json: HTTP 403 to automated requests
line 33 facebook.com, 10152786590948904, RESELLER, c3e20eee3f780d68
→ sellers_json: returns a web page, not a sellers.json file
line 35 smaato.com, 1100044650, RESELLER, 07bcf65f187117b4
→ sellers_json: HTTP 403 to automated requests
line 36 yahoo.com, 55029, RESELLER, e1a5b5b6e3255540
→ sellers_json: HTTP 429 to automated requests
line 37 adcolony.com, 44ef7fd4adebf701, RESELLER, 1ad675c9de6b5176
→ sellers_json: returns a web page, not a sellers.json file
line 41 smartadserver.com, 4125, RESELLER, 060d053dcf45cbf3
→ sellers_json: HTTP 404