FrameMarket GridMarket theme Category Display

Im using latest version of FrameMarket GridMarket theme and Market Press plugin. I tried to create some test sub categories and some sub sub sub categories and it seems that this theme does not properly display sub sub categories.

Would you offer some possible solutions to fix this? You can see how the categories are really messed up on this test site: http://frenib.com/

Thank you

Dan