You will enjoy slightly faster speeds on your device when you hardwire them to a pod by Ethernet cable. An Ethernet-connected device's connection to a pod will not be limited by its own WiFi capabilities or the WiFi environment. Connecting devices using Ethernet when possible can also improve the overall performance of the rest of the WiFi network since you are removing it from the shared WiFi medium. Just keep in mind that an Ethernet-connected client will still be limited to the performance of that pod's backhaul connection to the rest of the network.
You may need to power cycle the pod you have connected your device to for it to be properly recognized and added to your network.
Client devices use different MAC addresses for WiFi and Ethernet. This is important to keep in mind, particularly when it is assigned to a person or shared since the same device will be recognized as two separate devices on the network based on the MAC used.
Plume also supports Ethernet backhaul, meaning you can now create networks with multiple gateways and pod-to-pod Ethernet connections!