Hello

Please update your FeedBurner email subscription id in blog sidebar subscribe widget.

check it: 

http://prntscr.com/qvzg8b

http://prntscr.com/qvzgfe

And change a little code in widget.php file of Theme Support plugin.

check it : http://prntscr.com/qvzkrp

File Path: wp-content\plugins\theme_support_lemars\includes\library

We will update it with MailChamp subscription in future updates.

Thanks

Khelesh M

DexignZone Team