Flat Responsive was updated to version 1.0.5 with a few bug fixes. You can check the changes here.
- Undefined Index Fixed
- WordPress Version 4.3 Compatibility issue
- Woocommerce recent products Bug Fixed
- Tag Bug Fixed
NOTE: A reminder that if you made any changes to the theme’s files, including the style.css file, these will be overwritten. It’s also recommended you make a copy of your theme and save it somewhere as a backup.