Unable to add Adobe Express to Microsoft Teams

I'm currently having an issue with adding the Adobe Express app to a team in Microsoft Teams. Going through the motions of adding an app, once you get to the screen that usually has configuration settings that need to be set to click 'Save', it stays as an empty white box. 

Looking at the source of that iframe (https://express-cs.adobe.io/edu-organizer/cc-spark-edu/msteams/configuration ) shows there's data there, it just doesn't render in the browser. I've tested this not only in Teams itself, but in several browsers over several operating systems to ensure it's not a specific computer issue. I've also tested this on a different network to ensure it's not our web filtering.

Is this a known bug, or is this a 'me' issue?

Thanks.