Can't add more than 1 forum

Why can't I add additional forums? I must confess that I use Host Gator and I used the Word Press Dashboard to install the plugin and activated it there, instead of using FTP to put on the server. Is that why this plugin isn't working correctly?

I couldn't figure out how to install via FTP. Host Gator has an upload feature......but when I unzipped the file the 1 folder named Forum didn't contain all the files. If the problem is the way I installed the plugin please help with more complete instructions.......since I am fumbling around on this.

Thanks,

Eileen