Live views/playback not working for Safari 13 / MacOS 10.15

Hi,
Recently had to update to Catalina on my Mac, now I am unable to view any cameras connected to NVR DS-7608NI-K2 / 8P.
I just get the message "no plugin detected"
IS there any fix/update for this?
Tried Chrome too and same message. Possibly something to do with Catalina only having support for 64 bit code, or some other security
change they have made?

Thanks
D