I Bought a realm reborn on my sister's PlayStation 4.
I recently just bought a PlayStation 4.
Problem is that when I log into the game, I will be disconnected, when my sister logs into her playstation at her house.
I get a notice saying that she has logged into her account on a different system. She has no desire to play this game. I really enjoy it.

How can I play, on my own PlayStation 4, with my own psn id/email, without losing all of my progress I have made this far?

Please help me this is the most fun I have ever had in an mmo and it would be devastating to have to start all over