Anyone with both the PC and PS4 version of the game unable to logon to PS4 client?

[MrBoot]

I bought a hard copy of it, not sure if I'm registering it right. Mog Station tells you to do it on PSN, PSN says to put in a 12 digit code, but the game came with a 20 digit code. Also went to the website it says on the paper and registered it there members.square-enix.com/na but it still says no valid service account. Can log ont PS3 and PC just fine.

At the risk of sounding repetitive, you're positive you have a PS4 copy of the game that you're trying to register? The PS4 copies should come with the 12 digit code instead of 20. My wife's also came with a code for something else (I think some general registration, not the actual game registration); may want to make sure you're using the right one there.