Thought I’d share the outcome of my support ticket – might help someone else too! ……
It seems like our responsive video script is messing with your Ad.
I’m sure it is an easy fix, but we’ll need your login details to
troubleshoot the issue further.
You’ll need to use FTP to replace this file with this content http://d.pr/n/Y4YP/2Cn1cH8p
I’ve removed the fitvids script which resizes movies for responsive designs.
If anyone does have problems and the above link has expired or doesn’t work, I have it saved – so just let me know and I’ll send it over!