Can you play on both PS4 and PC if..

[Makusensu]

You can contact SE and they can unlink an old PSN and change it to a new one if that's what you need. But as mentioned you would need to buy licences for both platforms, having the complete edition on PS4 will not give access to it on PC.

They actually refuse to do this.
In my case I am no longer able to play the game, and it is not helping either.