Applies to: All Reolink 5MP cameras.
You may follow this guide to troubleshoot the problem.
Cause: Out-dated firmware
If your Reolink 5MP camera is indicated as 4MP on the live-view page or there's no 2560*1920 (5MP) option when adjusting resolution on Reolink PoE NVR, it's highly possible that your NVR's firmware is out-dated.
Solution: Upgrade your NVR to the latest firmware version.
Note: You may refer to this link to find the lasted version of your camera.
If the problem persists, you may submit a request to our support team for further assistance.