Hi Elias, Hi Marisa,
thanks you both
you are right, in the meantime I had done this but I have the impression it is not working and I don't know what I'm doing wrong.
I'm attaching a link to a page of my site (I hope I can do this). Please have a look at the code, you will see the tag rel=”canonical” href=”http://www.beautifulpuglia.com/it/gargano/isole-tremiti.html”/> which is indicating the URL I want to use. However SeoMoz is still giving me the error. And this is happening for both the Italian and English version.
So far I've only added the tag to this page, I want to find the solution before modifying all pages currently affected.
http://www.beautifulpuglia.com/it/linea-costiera/isole-tremiti.html
Thanks a lot again