This is a free plugin. They support for premium version only. This issue is not only for this plugin, I tried another plugin ASA1 (Amazon Simple Affiliate 1) and it has exactly the same problem. Each of these plugins are from totally different sources but both use ShortCodes. I feel it’s something to do with the theme, I might be wrong but why ShortCode from both plugin have the same problem. Is there any kind of Additional CSS I could add to make it mobile responsive?