ok, if the cameras are connected over the local network wirelessly back to the NVR then they will each have their own dedicated IP addresses and when you reset the NVR the channels on the NVR will have likely been reset back to their defaults and the connection to the cameras will have been broken.
You will need to scan your local network with Annke's own IP utility or a 3rd-party IP utility to find out the IP addresses of each camera and then manually re-add the cameras to the camera management page on the NVR.
There is unlikely much more advice we can give as we we do not work with Annke equipment.