chat box is empty cant controll it

hi. i installed chat in my wp. after the plugin instaled i couldnt see the chat icon on my wp admin dashboard. only could get some basic settings under settigs. i decided to buy the chat. bad idea since now there is a new bar over the nice blue first one that was there in first place. and i cant controll it the gray one. what can i do to make the blue on ethe default and the gray desapear?