Plex not casting to PS4
I've taken my PS4 to my parent's house over the Christmas break and I'm having troubles using my phone to cast to the PS4. I've tried this on 2 android phones, an android tablet and even the web browser through firefox. All devices are on the same wifi network so I don't know why this isn't working. None of them find the PS4 at all. Is there something I'm doing wrong or does this only work over a wired connection? Hopefully this won't just stop working once I go back home.
Thanks in advance.