Script not working in AdCode field

Hi team

I am using adrotate pro (Version 3.20.2).I am working on a site where I want to display some ads in a loop. I am having an issue with the plugin, When I am using the demo ad from the admin it’s working fine, But when I am trying with my own script in the AdCode field it’s displaying only two ads and creating blank space for other in loop.
This is my site “http://www.directexpose.com/”

Please help me out with this issue asap.

https://ww.wp.xz.cn/plugins/adrotate/

Thanks