This looks like a common issue amoung alot of people
I have a code for the Rise of the Warrors lvl 8 dlc with all the item perks and xp booster but it only works on the Australian and European PSN and game copies
Unfortunately I have the us copy of the game so it does not work, if someone has a us version of the code still and is willing to trade it with me for the EU/AU version it would be greatly appreciated
Email me on email@example.com if you want to set up a trade
If you signed up with a us PSN it might not make a difference as long as you live in us it should be fine (On the code page it should tell you at the bottom what region you are on, hopefully it is american, if its anything else I don't think its a US code)
I signed up with a my US account but I live in Australia, and even though I made sure I was doing all the questions on a us region when it came to get the code it told me I was on the wrong region and automatically put me on the Austrailian region
There is a way to check what region your code is though.
If you type it in on the psn it will pop up saying the code doesn't work if its the wrong region or it will pop saying what it is and whether you want to download it, if you cancel the activation the code should still work
Hope this helps you know if its us region or not
I have my doubts whether it will work or not but if your willing to make a trade do those steps above to see if it is the US code, and if it is then I would be very happy to trade my code for yours
There was this promotion thing for God of war ascension where you could sign up for Rise of the Warriors post release to get some extra content for multiplayer and some artwork and videos to look at
Unfortunately that has now finished so you won't be able to get them unless someone is giving them out or something (or they release them on the psn later or something).