Web Scenes are not currently supported in Operations Dashboard for ArcGIS. Sorry.
Please submit an enhancement on the ArcGIS Ideas site, or you could vote for this one:
Although I think this idea was meant for the older, legacy Windows-based Ops Dashboard.
Hope this helps,
Yes very tragic.
I embedded the code into the Rich Text element. Honestly I was surprised it worked that easy, I was expecting it to give me an error.