I was having trouble entering my preorder code, kept coming back as invalid.. then later it just worked.. so to others that literally just bought it, got the code and hammered it in immediately into mog station just to find it doesn't work and ... anyways just let it digest on the internet for like 10 minutes and enter the code... also don't use the "copy to clipboard" thing in steam cd key list won't work and might screw up the entry.