I got served an 816 as a result of a mistake on mine , I asked my bank to dispute the payment of a recurring subscription that I already cancelled beforehand.When the purchase has been reversed after that I got steam restriction and a 816.I have received an email from PSO2 about said issue, stating they would look into it. After few days they reply and told me that they needed more time and that was 1week+ ago.Here hoping they will give me a update soon.

Steam restriction has been removed today and still banned on pso2...

just got my account back =D

I'm still waiting, I'm on Xbox :< Its been a week since I contacted support