Recaptcha for Guest Emails in Invitex

I work for USA Sport Group. We have recently bought and installed invitex to help customers share our programs.
I'm having issues merging recpatcha into the invitex plugin for guests. I set it up according to the manual but I cannot get the blasted thing to actually send out manual emails for guests. Is there anything not covered in the documentation that I have to do to get it to fire?