Just decoded the message on the box of Siege Cog. It just says "Fortress Maximus". It then claims that is an access code for website content that will be available on January 3 2019.

Just decoded Skytread. His message is Duocon and gives the same result. A note too, a black light isn't needed. Simply tilting the box at an angle and shifting it to catch light properly will reveal the Cybertronian letters of the code.

Megatron = KAON

Hound = Maccadam (Maccadams)  

Tarn= Shockwave

Optimus Prime: LACON

...yes, with an L.

And the website password is actually IACON.

Good jorb, package designers.

Got the ultra Magnus

Forge of Solus (no spaces?)

Sideswipe=Sunstreaker

Starscream= Nullray

Soundwave=Lamppost 

All Siege - War For Cybertron secret message codes:
Can anyone help to fill in the gaps?

7 - code: "Sunstreaker" - Sideswipe / Kalis
8 - code: "Fortressmaximus" - Cog / Manganese Mountains
9 - code: "Maccadams" - Hound / Sea of Rust
10 - code: "Duocon" - Skytread / Slaughter City
11 - code: "Iacon" - Optimus Prime / Iacon
12 - code: "Kaon" - Megatron / Kaon
13 - code: "Forgeofsolus" - Ultra Magnus / Tagan Heights
14 - code: "Tarn" - Shockwave / Tarn
15 - code: "Lancer" - Greenlight / Drop Site
20 - code: "Siiexxxiitsfat" - Chromia / Hydrax Plateau
21 - code: "Trithyllium" - Ironhide / Protohex
22 - code: "Metroplex" - Sixgun / Blaster City
23 - code: "Praxus" - Prowl / Praxus
24 - code: "Nullray" - Starscream / Vos
25 - code: "Lamppost" - Soundwave / Stanix
26 - code: "GrandRain" - Alphastrike Counterforce / Underground Safe Zone
27 - code: "Teleport" - Phantomstrike Squad / Darkmount
28 - code: "Skyfire" - Jetfire / Borderlands
29 - code: "Crystalcity" Omega Supreme / Crystal City

34 - code: "Arcwelder" - Ratchet / Tagan Heights Outskirts
35 - code: "Rung" - Red Alert / Uraya
36 - code: "Reflector" - Refraktor / Helex
37 - code; "Trypticon" - Brunt / Praetoreus Wharf
38 - code" "Triplechanger" - Springer / Nova Cronum
39 - code: "Seekers" - Thundercracker / Altihex
40 - code: "Convoy" - Galaxy Upgrade Prime / Tyger Pax
41 - code: "Badcop" - Barricade / Praxus
42 - code: "Wreckers" - Impactor / Sonic Canyons
43 - code: "Turbofox" - Mirage / Iacon

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