Hello house, please lately I have a 20 IP cameras installed few months ago but recently, the ISP changed their subnet which changes the status to offline. I have tried using the NVR to change the IP address of each camera but not working. I don't want to start bringing down the cameras and logging into it manually. I have tried using an independent router between that of the ISP and NVR to see if I create a static section for the NVR and cameras while the other end is for the local IL but not working. Please who can help out?