All the gear no idea

This is our system. https://www.jmcsecure.co.uk/kestrel-5mp-8ch-ip-cctv-kit-with-4x-ip-turret-cameras Bought it last month. Seems odd that the OPs remote viewing stopped yesterday afternoon as did ours. Surely that’s not a coincidence? I’m not very good with tech so please bear with me. I’ve gone into Network settings and DHCP was already ticked but I’ve applied again and switched the NVR off and on again. Lan DHCP box is ticked. Wifi DHCP box is ticked but status says “device does not exist”. SSID is blank. IP address shows 4 zeros as does gateway and sub net mask. Then says “wifi IP range conflicts with wired IP range” 3G/4G status as above. IP address as above. Connectivity P2P status: connection failed: connect to the server failed. It is still recording onto hard drive and I can view if the monitor is plugged in to the NVR but the app no longer works on iPhone, iPad, Samsung Galaxy tablet or Samsung mobile so no remote viewing. It all went down yesterday evening, although I could still view the cctv on my iPhone. This morning that fails to log in/connect too. Any help would be greatly appreciated. Thank you.

Thank you so much for posting this! I have wasted an entire morning trying to “fix” this issue. Our remote viewing went down yesterday afternoon/evening too. I’ve gone in to the NVR and it says “device not detected” and “wifi IP range in conflict with wired IP range.” I’ve changed no settings, so the fact that you are having the same issue makes me think it’s a problem their end rather than ours. Seeing as the Kestrel App has not been updated in 3 years, I hold out little hope for a resolution. We’ve only had this CCTV for a month and we contacted QVIS a few weeks ago because my son is unable to get the app on his ‘phone as his ‘phone is too modern and Kestrel Viewer was made for an older version of Android! Apparently that’s not their problem, it’s a Samsung problem and they won’t speak to “the public” anyway. I am very close to ripping it out and sending it back. A CCTV system that does not update its app for remote viewing is not fit for purpose. The QVIS viewer another poster recommended on here has not been updated for 4 years so Kestrel is the “newer” option.