mautic updatesHTML field name by itself

I did follow all the instruction to connect CF7 With Mautic using “CF7 Mautic Extension”.
It did not work. While trying to find if any mistake by my side, I noticed that Mautic changes the HTML Field name:
from “your-name” to “yourname”
I also tried to insert “your name” and it changed it to “Your_name”
Of course it cannot work
Anybody knows any workaround?
here some screenshots
https://drive.google.com/file/d/0B9sKIp4pgFDYakwwX3hBM3A2ZWs/view?usp=sharing