Check your log echo mode in ULX settings. It's likely set to 0.
You can use XGUi, but I forget where it is.
Here are the modes described.ulx logEcho 1 ; Echo mode
; Echo modes:
; 0 - OFF No output to any players when an admin command is used
; 1 - ANONYMOUS Output to players without access to see who used the command (admins by default) similar to "(Someone) slapped Bob with 0 damage"
; 2 - FULL Output to players similar to "Foo slapped Bob with 0 damage"
Not all commands are echoed, but I forget which ones aren't.