iFrame not passing URL parameters

I'm using an iframe to link to a site, but the iframe isn't passing the URL parameters which shows the 'addif'

The pages loads, but the 'affid' is blank on the site, so no sales allocated to me.
Anyone have any ideas how to correct this? Thanks!

This is the code I'm using
<frameset cols="100%,*" border="0">
<frame src="site-url.com/?affid=sadfsd54564f65" name="ref form">
<noframes>

The site-url website is probably blocking iframe traffic. It's likely serving a default redirected catchall page.