RAX75 - IP & MAC Addresses Not Matching?

Trying to work on administration on my network and devices, and noticing a frustrating issue. The IP and MAC addresses the administration app and webpage are showing don't match up with the IP and MAC addresses the devices themselves are reporting.

For instance... one device is shown on the admin screens as 192.168.1.9, however the device itself says it's connected to 192.168.1.4. This doesn't seem possible, yet when I 'pause' the connection in the admin panel it does pause the device's connection.

Any clues?