Not Working for Me

I’m trying to inject this plugin’s shortcodes in all of my posts (several hundred) The only way to do this is with another plugin (popular one) which places anything after any paragraph desired. I put the opening shortcode after the 3rd paragraph and the closing shortcode at the end of all my articles using Quick Adsense plugin.

On the front end I’m not seeing any change. What can I do? Thanks

https://www.ads-software.com/plugins/read-more-without-refresh/