Wordpress sort search results by title offers powerful option for developers to sort search results alphabetically in ascending or descending order.
After upgrading the plugin to its latest version, you can now configure the sort settings for your search by logging in to WordPress admin. And then go to Settings - Sort Search Results by Title.
Probably yes. There is still no guarantee that this plugin will work with other plugins. This plugin takes control of the WordPress search. If you have other plugins that also controls WordPress search. It is possible that this will be a cause of conflict.Test thoroughly before using this plugin in a production setting.
If you want to add some features, contact the author. Your feature will be incorporated in the next release if it is a popular request.
Deactivate the current plugin you are using, then delete it in your server. Do a fresh install of the latest plugin version. Activate, that should fix the issue.