Yesterday I have purchased Responsive Banner Slider (for 4,90 $). However when I publish it, my shopping cart show "0" quantity and "0" amount even there is a selected item in my cart. When I deactivate the responsive banner slider, my cart becomes normal (I see quantity selected and the amount of the selected items).
What can be the problem? I need your urgent and kind support please. I'm blocked completely. Thank you very much.