Person plays my PS4 games?

I have the problem that my ex-boyfriend has now turned to my ps4 games. I've just seen that he has activated his PS4 as a primary to get the licenses for the games. From that moment on, I changed my password and everything associated with it, but he still plays my games! He would have to sign up for PSN if he wants to go to my account, but he still plays my games! I just do not want that - after all, I have nothing left to do with this person! Now he plays with his new my games and probably told her the account belonged to his sister or something. I want to completely disconnect the PS4, so that the account is disconnected from all PS4's and you have to add the account again to have access. If this is possible, how does it work?

On please delete the account, he just laughed and blocked me. I do not want to hang around with such a kindergarten, so I want to completely separate the PS4 now.

Console Management - Devices

Separate there.