Feeds not showing on educlean

I presume this is a theme issue as the feeds seem to work otherwise...

I have the theme set to display 3 feeds: The first tab shows properly, the second and third display "Currently there is no feed available." This is a relatively new development, I think. It was working a few weeks ago.

1. http://bestagentblogs.com/feed/
2. http://bestagentblogs.com/wpmu-feed/
3. http://bestagentblogs.com/wpmu-feed/comments/