SL blocks within Rise xAPI not displaying via LMS embedded inside another webpage

We use LearnDash as our WP based LMS, and we develop all courses on SL and Rise. They all work fine on our LMS. However, we now need to embed our LMS inside another website, Channeltivy.

The Storyline blocks within Rise will not display when opening the course from channeltivity (see images attached). But all Rise blocks display fine, via the embedded access, it is just the SL elements that are blank.

Wondering if there is a global setting we can activate / deactivate on Rise that might be stopping SL from displaying properly? Specifically something with viewing it via an embedded webpage of a parent site.