Data from popups on a map

I'm trying to scrape all the exhibitors of this trade show:

I'm able to select all the companies in the left column, either with a Popup Link or an Element Click. When I scrape, I do see all the 'more info' popups appearing one by one. But I cannot scrape anything from that popup because whatever I try to select something (the 'meer info' button should reveal another popup with details), I get the error 'parent does not contain selected element'.