If you have a Google+ account connected to your Blogger account, your comments may not work properly with our themes. If when you click on the “comment” link in the post footer, you get an error page, follow these steps:
1. Go to your Blogger dashboard (Blogger.com). You should see something like the image below. On the same line as your blog name, find the little arrow next to the “View Blog” button. Click that and then open “Google+.”
2. Uncheck the box “Use Google+ Comments on this blog.” The settings will automatically update. Your comments should be working now – hooray!