I was trying to redeem my voucher codes for the free month of PlayStation Plus as well as the Killzone Mercenary Beta and I get a message saying that the code is invalid. I have double-checked to make sure I wasn't mixing up letters and/or numbers and I'm still getting an error.
Can anyone assist me on this?
Solved! Go to Solution.
Reporting in at almost 7 hours later from trying at 12:00am and the code for PlayStation Plus is now saying "An error has occured. (NP-8154-8)"
Apparently, the 1 month free trial DOES NOT stack if you're already a subscriber. So if you're already a PS+ member, the code is essentially something to share to a non-Plus member.