On my wordpress blog, roadwolf.ca I have been trying to troubleshoot the comments over the last few days to no avail. A search on this issue revealed nothing similar from what I could see.
The old comments show, and it allows you to type in and submit a new comment, and seems to process it when submitted, however it just returns to the blog page / post after submission, and shows no changes or no new comments. Akismet doesn't show any blocked comments, and it happens with that plugin disabled anyhow.
I tried changing the theme back to default, I tried deactivating plugins and JetPack options, as well as widgets. And I scrutinized the settings regarding comments and discussion, and everything is set as I Would like it to be. I recently moved my whole blog from the /blog/ folder of my domain to the root, and that went smoothly, other then the comments possibly being messed up because of it. Looking for any hints of what to look at next. :) Thanks.