Daisy Chaining GS108 through outlet?

The pods (apparently Plume-designed SuperPods with Wi-Fi 6) are just simple WiFi "repeaters" (or extenders), and are connecting wireless to your main WiFi router - whatever is handling the routing and NAT for installation. Usually, this is done on another box, somehow also connected to the Midco Fiber Internet -or- they provide a so called CPE (Customer Premise Equipment) which does include a NET router and a WiFi access.

Is this a new installation? From your problem description, this looks like the wall ports and the switches might be connected to a device not working as a NAT router, instead, there might be connections patched to multiple ports where one can connect usually just a single computer or a NAT router.

Said this: No, you don't need an additional Pod. Instead, you need to figure out what is providing the WiFi connection. This is where the switches (probably via your in-house cabling) should be connected to, instead of just the fiber box. Challenging your ISP is certainly valid on what and how of their equipment should be installed, and how to manage your network with the WiFi ... where the Pods and in case your mobile phone does connect to - by WiFi.

Chime back if you need more assistance and ideas 8-)

Regards

-Kurt

PS. Yes, some photos if the installation (where the Fiber box is, and where I guess should be the WiFi router) might be helpful.