SpacemanSpiff
Known around here
Seems like a factory reset is coming to the top of the list fairly quickly I recommend trying it on only one camera, at first, to ensure it resolves the issue.
Once you are in to the cam GUI, set the IP to it's previous address. Likewise with the username & password. As long as they all match what it is currently set for the respective camera profile in BI, the live feed should appear in the system.
GeoVision Inc. GV-EBL2100 Series 2MP H.264 Low Lux WDR IR Bullet IP Camera - IP67, IK10, Intelligent IR, PoE, WDR, ONVIF Profile S
IP67, IK10, Intelligent IR, PoE, WDR, ONVIF Profile S
classic.geovision.com.tw
Once you are in to the cam GUI, set the IP to it's previous address. Likewise with the username & password. As long as they all match what it is currently set for the respective camera profile in BI, the live feed should appear in the system.