I've got a site http://alternex.onlineja.com I'm using gavick professional modules (www.gavickpro.com)

The items menu is related to some section/blog layout, I've two modules onto it,

whenever I click articles from the modules, it does not show the content, it shows the section, i.e. it does not go anywhere.

Basically produce a new menu and modules and link them together, the articles return to the items page listing.

I don't know how you can solve this issue

The Web addresses will vary. The "bad" page linked in the items page has &Itemid=79 around the finish, so try to eliminate that in some way.

Consider it is a third-party module, you may be better asking on their own forum should they have one, or support funnel.