Why wont PS4 Remote Play Open?

If PS4 Remote Play won't open, it could be due to several reasons. First, ensure that your PS4 and the device you're using for Remote Play are both connected to a stable internet connection. Additionally, check that you have the latest version of the Remote Play app installed and that your PS4 is set to allow Remote Play in its settings. Finally, ensure your PS4 is powered on and not in rest mode, as it needs to be active for Remote Play to function.