Link icon in Popup

Hi! In my projects portfolio i put custom urls for each project, in the popup appear the “link” icon but at the moment of clicking the icon the browser try to download a file instead of loading my website url. This only happen when the url contains anything after de “.com” of my website. How can i make the icon work with my custom url and not only with the domain?

The page I need help with: [log in to see the link]