Iframe content not showing

Hi.
I am trying to add an iframe ; I’ve put it as a text element, raw content, or an embedded video and none of these options work.

The link I’m trying to embed is this:

I can add youtube videos fine, I am hoping this is something obvious?

thanks

Hi there,

Thanks for writing in.

The browser will not display non-secure sources if your main domain has SSL. If you’ll directly access this https://portal-staging.rivustv.com/RivusIQplayer/quizembed.php?id=237 , their domain doesn’t support SSL or doesn’t have valid SSL.

To fix them, you should contact the provider of that URL and have their SSL fixed, or simply disable SSL protocol in your main domain (from https to http).

Thanks!