You messed up the markup when you added a /.
<iframe width="100%" height="2094" style="border:none; background:transparent; overflow:hidden;"<br />
id="fb_iframe" src=/"/sitting/sitting.html"><br />
<a href=/"/sitting.php" title="sitting">Check out my CoffeeCup Form</a><br />
</iframe>
Should be:
<iframe width="100%" height="2094" style="border:none; background:transparent; overflow:hidden;"<br />
id="fb_iframe" src="/sitting/sitting.html"><br />
<a href="/sitting.php" title="sitting">Check out my CoffeeCup Form</a><br />
</iframe>
The form is here:
http://jojototherescue.com/sitting/sitting.html