Thanks for letting me know! What keyboard layout (lang) are you using? :)
The tool can remap the keys in case some users experience incorrectly mapped keys. You can double-click in the window and it will open a menu, then click configure. In this configure mode you can go through all keys or manually click the specific keys you want to reconfigure. By pressing down a key on the keyboard, it will remap the currently glowing key to that keys keycode. :)
If you have time to share more info I'd love to get some more info on your issue, my discord username is @justfredrik :)