Contact form not work

I can not make the contact form work, nor can I find anything about it in the documentation.
Need help! I've already sent two emails and left a message on the themeforest.
Please help me.
The page is here:
www.daniellaureano.com.br/maximgroup/site/index.html

In the email I sent the access data via ftp if you want to see more closely.

Thanks for all the help and I'm still waiting.