A solution to this has been posted in another topic of Playstation troubleshooting forums, not exactly the most convent but will get you in none the less.
You basically have to link your PSN through the PC/Mac Origin client.
How do I link my Origin Account to my PSN Online ID or Gamertag?
Once you've confirmed your Origin account email address, you should see if it matches the email address you use for your other accounts. If it matches, all you need to do is sign into your game on PSN or Xbox Live. Origin will match up your email addresses and take care of the rest.
Note for Next Gen Consoles: Your gamertag or PSN Online ID carries over from Xbox 360/PS3 to Xbox One/PS4. If you have played any EA game on the last generation of consoles, please make sure you find and use that same account when you play on next gen.
If your Origin Account email address doesn't match your PSN or Xbox email, you can connect them using the steps below:
If you're still having difficulties, please contact Customer Service: http://help.ea.com/