Server 403 error (page refuse to publish)

Good day everyone,
I have been finding it difficult to embed some lines of html5 code on my wordpress radio website. The player code, once embedded on the site/page, refused to publish/update or save as draft. I have tried several method all to no avail. But the code works perfectly on some other sites.
here is the code
<iframe width=”100%” height=”330″ src=”https://s2.citrus3.com:2000/AudioPlayer/easylisteningcouk?showSettingsLink=true&mount=&&#8221; border=”0″ style=”border: 0;”></iframe>

What could have been the cause?
I would appreciate your feedback.

Thanks,
Emmanuel F.

The page I need help with: [log in to see the link]