WordPress.org

How do I go back to having curly quotes?

Disable the plugin, or set all the options to on under Settings > No Curly Quotes.

I want curly quotes in post titles, but not in the post content. How do I do that?

Change the options under Settings > No Curly Quotes. You can set behaviour separately for post titles, content, excerpt and comments. By default when you install the plugin, none of these will have curly quotes.