It is seen that you are currently using the older version 1.1.0 of the theme.
The new version of the theme is available and has all the theme Customize options.
Please update it to the latest version 2.1.1.
Note:Be sure to make the backup of your website or else it may be lost while updating the theme.
You better use duplicator plugin to make a backup. https://wordpress.org/plugins/duplicator/.
Hope the problem gets resolved.