Nothing is playing the screen is black. I can search for it, select the anime,
but when I try to press play it wont start.
Tried re-installing the app, restart ps4, restart the app, logout login, and many other things
but nothing worked, a week ago it was working and now its not.
On your computer open crunchyroll,
go to profile > settings > basic information
and add your birthday date.
now on the tab Account Settings
video preferences > mature content filter > and select show mature content.
Now everything on crunchyrool should play on the PS4.
This worked for myself hope it works for you too.