default or selected kernelversion does not have config value CONFIG_HID_ROCCAT_KOVAPLUS.
Result is shown for kernelversion 6.2.5

Roccat Kova[+] mouse support

modulename: hid-roccat-kovaplus.ko

configname: CONFIG_HID_ROCCAT_KOVAPLUS

Linux Kernel Configuration
└─>Device Drivers
└─>HID Devices
└─>Special HID drivers
└─>Roccat Kova[+] mouse support
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
Support for Roccat Kova[+] mouse.

source code:
drivers/hid/hid-roccat-kovaplus.c