Due to an influx of spam, we have had to require each new account to be manually approved. Please register an account and then write an email to accountsupport@archlinux.org to get it approved. Sorry for the inconvenience.
https://gitlab.com/OpenRGBDevelopers/OpenRGB-Wiki/-/blob/stable/User-Documentation/Frequently-Asked-Questions.md#my-razer-devices-arent-being-detected