...additionally, you've got your site set up on a subdomain linked to a folder, so all the data is being pulled in from fairtrade.the-ishop.com and people are directed to this folder the-ishop.com/fairtrade.
People are suspicious about being redirected and it's also causing delays in loading your site.
Juts put it in the root of the-ishop.com and put a redirect from the fairtrade folder to the root. Or, buy a domain which is more relevant to Fair Trade goods, put your Zen Cart site on that and redirect people from your old domain to the new.
Basically, you've made a mistake in the way you set it up originally and will have to sort that out now - plus install a Full SSL Certificate as Get Em Fast advised.
Vger