While not what you asked,

I have the same mouse model and use it with EndeavourOS and play WoW. I had the same issue with binding…In the end I just created a win 10 VM through VirtualBox, passed through the Naga to the VM, installed the Razor software in the VM and did the button binding there. Saved the profile to the mouse. disconnected the USB passthough and the binds all worked in Linux. Note I had to once off disconnect and reconnect the usb cable for the changes to take effect in Linux. Also had to plug in a temp mouse so that I could control everything while the usb passthrough to the VM.

So yeah not what you wanted but there an easy way to get the binding to work…