Fine tune of mobile for my site

Hi,
my site www.greenme.it, is not working properly on mobile. 
If you go on iphone.greenme.it or m.greenme.it (android) works ok, but if I link a post on facebook (or even if someone click on google results), the redirect don't work and the user is redirect to homepage.
Anyone can help me please?

Thx,
Mario

Could you put link here (to test)?