I'm sorry for not being more clear. I'm trying to give each device it's own address reservation. FireTv 192.168.1.54, ps5 192.168.1.55, laptop 192.168.1.56 for example. However, I can add them via the radio button, but when I tried to edit the device name so I could identify instead of blank, it gives bad request. I'm not touching anything else, just trying to give the device names.
They already have names in the device manager, but when it pulls up a list of IPs you can add, there's only a few and the device name is - -.