BuddyPress.org

@putnum01

You have to add support for Smugmug to WordPress’ embed provider whitelist yourself.

Smugmug offers oEmbed support so this should be quite easy.

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You can either add Smugmug support via wp_oembed_add_provider():

https://codex.wordpress.org/Function_Reference/wp_oembed_add_provider

Or if you can’t wait, you can upgrade your copy of /wp-includes/class-oembed.php to the latest trunk version:

https://core.trac.wordpress.org/changeset/13203

As the next version of WP will offer oEmbed support for SmugMug natively.