I'm sorry I do not speak English so I use the google translator. I installed the module equivalent in the description and all set but not displayed. If you set the default template beez2 it works, but if I set a different template no longer works. What could be the problem? Thanks

After changing the template, try viewing the source of your page (ctrl+U) and search for the word "freichat" .

Do you find it in both the templates ?