Hi,
the 1st problem I see is that you are using Wp Rocket, which is not compatible with GD. GD Booster is the only caching system comaptible with GeoDirectory.
Also you have this JS error in that page:
TypeError: obj.currentStyle is undefined
http://www.italianialondra.com/wp-content/plugins/wp-sliding-logindashboard-panel/js/pngfix/supersleight-min.js
Line 6
Please try to disable the wp-sliding-login plugin and let us know if the problem goes away.
If it doesn’t I see that you also have other +40 plugins. You should try disabling all non GD Plugins and test again. If the problem is still there, then the issue is either theme or server realted. If it goes away, reactivate plugins one by one while testing until the culprit is found.
Let us know how you went,
Thanks