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 (25 of 180)
line 4 facebook.com, 300466985746409, DIRECT, c3e20eee3f780d68
→ sellers_json: HTML or login page instead of JSON
line 18 openx.com, 565175463, RESELLER, 6a698e2ec38604c6
→ sellers_json: HTTP 403
line 20 criteo.com, b-062019, RESELLER, 9fac4a4a87c2a44f
→ sellers_json: HTTP 403
line 21 appnexus.com, 17779, RESELLER
→ sellers_json: HTTP 403
line 26 zetaglobal.net, 630, RESELLER
→ sellers_json: HTTP 404
line 29 openx.com, 537153564, RESELLER, 6a698e2ec38604c6
→ sellers_json: HTTP 403
line 30 openx.com, 563905670, RESELLER, 6a698e2ec38604c6
→ sellers_json: HTTP 403
line 43 appnexus.com, 14230, RESELLER, f5ab79cb980f11d1
→ sellers_json: HTTP 403
line 49 ogury.com, 065d4ff5-a269-44be-9634-9d4d7af2dfc3, RESELLER
→ sellers_json: HTTP 403
line 59 appnexus.com, 11826, RESELLER, f5ab79cb980f11d1
→ sellers_json: HTTP 403
line 85 gamaigroup.com, 423056, RESELLER
→ sellers_json: HTML or login page instead of JSON
line 88 loopme.com, 11303, RESELLER, 6c8d5f95897a5a3b
→ sellers_json: HTTP 403
line 89 loopme.com, 11424, RESELLER, 6c8d5f95897a5a3b
→ sellers_json: HTTP 403
line 92 openx.com, 540785403, RESELLER, 6a698e2ec38604c6
→ sellers_json: HTTP 403
line 93 openx.com, 559798512, RESELLER, 6a698e2ec38604c6
→ sellers_json: HTTP 403
line 122 criteo.com, B-057955, RESELLER, 9fac4a4a87c2a44f
→ sellers_json: HTTP 403
line 136 adcolony.com, 7d04a18a58085918, RESELLER, 1ad675c9de6b5176
→ sellers_json: HTML or login page instead of JSON
line 144 freewheel.tv, 1235183, RESELLER
→ sellers_json: HTTP 403
line 145 freewheel.tv, 1235279, RESELLER
→ sellers_json: HTTP 403
line 148 criteo.com, B-063105, RESELLER, 9fac4a4a87c2a44f
→ sellers_json: HTTP 403
line 152 rhythmone.com, 3948367200, RESELLER, a670c89d4a324e47
→ sellers_json: HTTP 403
line 153 adx-dre.op.hicloud.com, PUB_HW_1003, RESELLER
→ sellers_json: HTTP 404
line 154 adx-dra.op.hicloud.com, PUB_HW_1003, RESELLER
→ sellers_json: HTTP 404
line 155 adx-drru.op.hicloud.com, PUB_HW_1003, RESELLER
→ sellers_json: HTTP 404
line 158 hyperad.tech, 20, RESELLER
→ sellers_json: HTML or login page instead of JSON