Connected devices not showing up on Cox wifi app or the Panoramic Gateway website

I'm trying to check the connection strength for my Samsung television because I'm having a problem with buffering and audio not syncing with a speaker's lips. The Cox wifi app shows many of my devices as unconnected to my wifi network even though they are connected. Similarly, under Connected Devices on the website for my Panoramic Gateway, many of my devices, such as my television, printers, and laptops, show as unconnected when they are in fact connected. Is there anything I can do to have these devices show as connected on the wifi app and the Gateway website? Thanks for your assistance.