auto iframe height not work for different domain
I have set up an advanced iframe pro plugin with provided instruction. I have added an advanced iframe shortcode in my WordPress page and done settings in the External workaround tab. Still I not getting the auto height of Iframe. Please help me to fix this issue. I tried the last two days but not getting the solution.
I added the below shortcode on my page for a different domain.
[advanced_iframe securitykey="JKHGFKLffdR" id="iframeOr" use_shortcode_attributes_only="true" src="https://couponapp.directory/index.php?dir=aO1xSbcJ4FgFZf6bTnVEr" width="100%" height="300" scrolling="no" enable_external_height_workaround="true"]
I don't want to scroll and iframe height needs to do auto or 100%. Please help me with this issue.
what is the difference to http://www.tinywebgallery.com/blog/forum/advanced-iframe-pro/auto-height-not-working-for-external-workaroundanother-domain#post-254 ? duplicate post?