Not really because you've been incredibly vague
Did you only use HDMI for the old PS4 and not perhaps an optical cable to the amp (the Pro no longer has an optical socket)
What make is your home cinema /subwoofer?
Shirley if the LFE light is on then the sub is receiving a signal from the console ang you need to check the volume of the sub and make sure it's still connected properly to the home cinema system