@Blonde
You have tagged this under the wrong section. The NOW black box is NOT the router, it’s the streaming device which has no longer been made for years now.
Follow the section for splitting the Wi-Fi bands and this should point you in the right direction to change the name.
https://help.nowtv.com/article/improve-broadband-speed
FYI that I do not work for NOW, just a NOW customer trying to help
