Howdy 
 
I have just analyzed  valfrance.fr for the current onsite SEO status and saw that your website has a handful of issues which should be addressed. 
 
No matter what you are offering or selling, having a poor optimized site, full of bugs and errors, will never help your ranks. 
 
Let us fix your wordpress site errors today and get your ranks reach their full potential 
 
More info: 
https://www.digital-x-press.com/product/wordpress-seo-audit-and-fix-service/ 
 
 
Regards 
Mike Phillips