Is the release code region locked?

[Shura]

sadly still got a batch of people that didn't get a new code no matter how many times they spammed >=/

I'm sorry to hear that; if people still can't get the right region code, its best to contact SE support. Also for those who got a 20 digit code, keep in mind that if your code starts with RAAU its NA and i think RAAE is EU.