I do use JCH, but it is not active. I get this both in dev and static mode for EasyBlog. It also looks like something about the Component page is loading a script from Regular Labs in front of jQuery as well. So this throws an additional console error. Im running EB 5.0.44.
I currently have the site locked down by IP as I am redeveloping a few features as well as updating EB and ES.
Currently I can't tell you where went wrong yet is because I was unable to login from your site, based on what i know is that regular lab extension should be work fine with Easyblog, because I saw a few of our customer using both of extension, it seems look fine.
Perhaps you can temporary upload one of the test site on live so we can able to check this issue quickly?