Can't admin my server in Garry's Mod

I created my server by SteamCMD and install the ULX, but when I entered my server by clicking Local Network and join my server and open ULX menu it shows the options that like i’m not the admin! can’t force changing the map or gamemodes or anything! just voting to change like any user, so maybe that means i’m not the host of my server?
and I have a simple question, when I create a server by SteamCMD, should I see my addons I subscribed? just like when I play an offline server? or my addons aren’t active in the dedicated server?

Thank you, please help <3