cant recivd form's

i cant recivd forms from my website .
when im submitting a form, im getting approve that i sent the formk .
but when im checking my email so im getting nothing .
weird .

my website is :
http://m-paris.co.il/%D7%98%D7%95%D7%A4%D7%A1-%D7%94%D7%96%D7%9E%D7%A0%D7%94/

http://wordpress.org/extend/plugins/si-contact-form/