How to fix ajax commenting

My commenting system is totally messed up. Sometimes it shows up under posts, sometimes you can’t see names, sometimes all that shows up is the name no matter which browser. the blog is at https://annieagarwal.com/blog
I am using a template from tofurious who says not to upgrade the ajax commenting system. So is there a way to fix this or can someone recommend a commenting system similair to the one on this site https://www.robincornett.com/. thanks