If your CCTV system was installed after January 2017 and you are using the Hik-Connect app, this does not apply to you.
If however your system was installed prior to this and you are still using the HiDDNS (iVMS-4500) app, then this applies to you.
When the engineer would have installed your system, a particular set of ‘Port Forwarding’ rules would have been applied to your router. If you change, upgrade or even reset your router (broadband modem) – then these settings will become non existent, as will your ability to remote view your CCTV.
In order to resolve this, you can do one of the following: