Hello I ran into a problem. I made categories in my events (e.g germany, france). Now i try to get

Hello
I ran into a problem. I made categories in my events (e.g germany, france). Now i try to get the category events-items listed on a page with the shortcode [eab_archive category="31"]. But wherever i place this shortcut (widget, page editor). Nothing happens. I can't figure out what's wrong. Please help