YITH Request A Quote Admin Email Notification Doesnt Work

I have 2 kind of problem with YITH Request A Quote
Firstly, after pushing the submit quote button page goes to “There was a problem sending your request. Please try again….” but quote drop down to orders in woocommerce.
Secondly, admin Email Notification doesnt work. After getting a quote it goes to order but not email.

The page I need help with: [log in to see the link]