I'm sorry to hear that you're having trouble connecting your Keen Ranger camera to the network. To change the APN settings, you can try the following steps: 1. Open the camera's settings menu. 2. Look for the "Network" or "Mobile Network" option. 3. Select "APN" or "Access Point Names". 4. Tap on the current APN and edit it. 5. Enter the correct APN settings provided by your network provider. 6. Save the changes and restart the camera. If these steps don't work or you're unsure about the correct APN settings, I recommend reaching out to your network provider for further assistance.