Hi there,
Welcome to SeaTheme forum.
There is no option to access the previous settings. You have to re-config the theme options.
ps: 1. it only affect the website global settings, like logo, color, etc.It will not reset the existed posts/pages/images.
2. you can check if there is automatic backup options on your web server host cPanel, so that you can try to return to the previous backup point. Please make a backup before operation.
Regards!
SeaTheme – FAQs – WordPress Customization – Facebook