Installer does not detect my bluetooth keyboard

I have logitech mx 5500, everything is fine until i hit blue libreElec Installer screen. It shows on keyboard LCD that i am "connected " while booting but after blue screen comes it says "connection not found" and i can't use keyboard. i tried every method i found on internet. I don't have any other keyboard so i have to use this one. It is a x86_64 pc if it matters