Access your blog Layout > click Edit icon on Default Variables widget.

Post Per Page: In New Site Name add postPerPage, in New Site URL add the number of results, it should be the same as the posts from the home page, after click on save button.

Fixed Sidebar: In New Site Name add fixedSidebar, in New Site URL  add true or false, after click on save button.

Comments System: In New Site Name add commentsSystem, in New Site URL add the comments sytem type {bloggerdisqusfacebook or hide}, after click on save button.

Disqus Shortname: In New Site Name add disqusShortname, in New Site URL add your disqus comment system shortname, after click on save button.