I have changed my router and now my WIFI camera will not connect

If you have changed the wifi router, you need to update the wifi settings on the cameras.

You need to reset the cameras by pressing the reset button on the bottom of the cameras for 10 seconds (led red flashing means reset is complete).
After resetting the cameras, you need to plug ethernet cable inside the camera’s connectors and connect it to the new router.
Please go to the “Camera” menu option on the main menu setting
Delete the cameras in the “Added device.”
After deleting the device, you need to set the wifi cameras again (please make sure you have plugged the cameras to the router using the ethernet cable at this stage)
Click the IP search button.
Select the found cameras and click Add.
Select “Wifi Camera” on the left-hand side menu, then select the camera channel and update wifi name (SSID) and password.
Save settings.

Please check more details on how to add a wifi camera on the section “Adding a WiFi camera” in the user manual.