We are aware that there is an issue with user comment archives and we are working on it. We agree that the comment archives are a really important resource on the site and want to get them back up as soon as possible.
Please leave any additional issues taking place with the comments section in the comments below and we will be sure to bring them to our tech support.
Thanks so sorry for the issue.
Source Article from http://mondoweiss.net/2017/03/comment-archives/