This might be related to other questions on the forum, and if so, feel free to redirect me.
We have embedded our nabble forums on a variety of different sites in the past, and haven't had too many issues. However, the embeds have not been showing up, despite using the updated embed code. All that comes is the link to the board.
In addition to re-adding the updated code, we also have customized the domain of our nabble, and while the customized domain is working fine, the embed is still not working.
Just to follow up, if others are looking. This looks like it was the issue for me (thanks, NS!). When visiting the same exact page, but through the unsecure site, the embed shows.
That doesn't help me a whole lot, as the platform I would like to use the Nabble embeds must maintain its secure access. So, I'm hoping this is resolved in future iterations. But it at least lets me plan for contingencies.