blog sidebar

Hello, Great theme you came up with! I love it. I am trying to get the side bar to be displayed only on the blog page but it does not seem to change. I will select right sidebar option but it does not stick for the blog page. I can change the other pages but not the blog one. If I change the theme default option then it will change the blog but it also changes the display for the homepage. What am I missing? Thanks in advance for your help.