You can change the PS4™ system that you connect to for remote play, or initialize PS4 Link settings. Select (PS4 Link) > [Start] > (Options) > [Settings], and then follow the screens.
Change PS4™ System to Connect to for Remote Play
Register your system with the new PS4™ system you will use remote play to connect to.
On your system, select (PS4 Link) > [Start] > (Options) > [Settings]. If a PS4™ system is not found, follow the screens to manually register your system with the PS4™ system.