Mixcloud embed / shortcode not working

I’m pretty new to this but I cannot find the answer to this elsewhere (sorry).

This is really frustrating me as I cannot get the Mixcloud embed / shortcode to work. I go on to my profile at Mixcloud, copy the WordPress shortcode and paste it into my blog post but it outputs as a branded Mixcloud “Sorry we can’t find that content” error (see here: https://www.djmattrouse.co.uk)

However, when I have posted the very same shortcode on my WordPress.com site (here: https://djmattrouse.wordpress.com/2015/07/08/bar-room-bar-2/) it has worked.

So I’m not really sure what I’m doing that’s wrong. Please help. ??