How does this work? I went to an episode of Nerdland, posted a comment, saw a brief loading icon and the input area emptied itself and... poof, nothing happened

How does this work? I went to an episode of Nerdland, posted a comment, saw a brief loading icon and the input area emptied itself and... poof, nothing happened. Reloaded page, no comment. Tried posting again, but no comment appeared. Is the commenting system overloaded? Do I need to login first (it doesn't say so)? Does it need to be able to talk to Stripe the payment network to place comments (TrackerControl app shows that as the only detected tracker while using the site)? I didn't include links or markup, so if it was detected as spam (again: there's no mention of that, no error, no nothing) then I'd not know why.