Roger99, Gald you solved your problem! I have a Similar problem... I can view the cams online in my LOCAL network... but when I go on a OUTSIDE NETWORK I cannot access them via web, or phone app. I tried to register it via the website but the HK-Vision website keeps saying the device is offline.... which is NOT true because like I stated I can access them online via web, thier app on my PC, and phone app on the internal network, NOT a external... you said you changed something to port 8200... what did you switch over? the RTSP port??
please let me know as this has me pulling my hair out...
here are my ports
(I switched some of the ports, but even when I had them set to default they did not work, and all are port forward in my router) Any help would greatly appreciated.