The Maxhost theme does not use any 3rd party plugin for it’s Contact Form. Instead, it uses it’s own ready to go Contact Form. You need to create a page using ‘Contact’ page template and publish it. The page you just created got the Contact Form which is ready to receive emails from your visitors. The emails are going to your wp admin email address, which you can change by visiting your wp admin dashboard’s top-right corner’s ‘Edit My Profile’ page.