Plugin: Facebook Comment Control

Hi Marco, I just installed your plugin – http://www.juliatrops.com, but I do not know how to turn off the default WordPress comments template – could you please describe instructions?

And if I do turn them off, does that mean all previous comments will be removed as well?

Is there an option to include only from day of installation forward?

Thank you Julia

if this is it, then I did not activate the Facebook Comment Control box correctly.
I have the api, secret and user id filled in…
any other thoughts?
Julia