<iframe src="http://devocionmusical.com/test/paz-aguayo-2016" width="100%" height="450" frameborder="0"></iframe>
I run this tool, provided by a wordpress plugin:
http://www.tinywebgallery.com/blog/advanced-iframe/free-iframe-checker
But it says: The header is set to SAMEORIGIN. This means you can only incude this page on the same domain.
I've already checked the Core (6.1.0) General setting > Allowed domains: ALLOW_ALL_DOMAINS
Do you know why? It used to work before..
Thanks-
updated by @andrusito: 12/13/17 06:35:55PM