Hi,
This is a z-index issue.
The lighbox popup to show images uses z-index:9999.
and your menu navigation module is using: 10000
The menu navigation should be less than the lightbox's z-index.
To reduce it, open this CSS file:
ROOT//templates/gk_esport/css/menu/menu.css
find this Line:
#gkMainMenu { position:relative; z-index:10000; margin: 42px 0 12px 0; border: 1px solid #cfcfcf; }
And replace it with this.
#gkMainMenu { position:relative; z-index:9998; margin: 42px 0 12px 0; border: 1px solid #cfcfcf; }
Your problem will be solved.
Regards.
Forum Support.