Here’s my post for reference. I’ve been able to find someone else who seemed to be able to post it embedded properly however their post is back from 2016 so I’m guessing something since then has broken?
Hey! I checked with the team and they said we use Embedly for our embeds. I’m not sure if we used something different back in 2016. I think the best thing would be to write into the Sketchfab support team so they can investigate more thoroughly as they have a few help articles about the integration. Let me know how that goes!