It worked at some point, but now the comments are not displayed. In the firefox console, I see:
Load denied by X-Frame-Options: https://... does not permit framing.
And in the network section, for this resource, I see that:
X-Frame-Options: "ALLOWALL, DENY"
I have no idea what’s going on, but I think it may be related to SSL.
Both the blog and the discourse instance are behind a reverse proxy which does the actual SSL.
I’m not sure what other information could be relevant.