[Plugin: FriendConnect Login] Names and Google ID Link Not Appearing

I’ve been using this plugin for a few months on my site, but the last few weeks I’ve been having a strange issue with it. When people who are members of the site leave a comment, it’s not grabbing their data. No name, link, or gravatar is displayed in the comments section, and in the dashboard, only an IP address is shown. The first time I noticed it I asked the reader if they’d had any issues posting, and they said no. It’s just kind of strange. It’s now happened with three of the four latest members to leave comments. Any ideas what might be going on? Thanks in advance.