i have my witcher installed ong gog i see him on aplication i can run him and everything but i can't configure him in "more" or i can't chose download extras section and of course i can't use free dlc's. in opinion fo gog i can still buy game is store but i arledy have it. help me plz.

Have downloaded and installed it through Galaxy or with the GOG Downloader?

idk i think gog instaler

Then you can't access the "more" tab and you have to manually download and install every DLC. Auto-updates and DLC configuration are only possible with Galaxy.

then how do i do it. i'd like to point out that i have cd version just to fill that other question

Mmmh... I don't know how it works for the cd version, but you can go on your library on the gog website and download everything from there. Anyway, to get the DLCs you have to "buy" the free DLC pack.