subscription issue

I am using your Yith PopUp free version and added to website and linked it with mailchimp, after that i tested it when i test while logged in as admin mail id is getting listed and when i tried it from another browser am getting error. Ops, Something went wrong. An i changed a line of code

In file
yith-woocommerce-popup/includes/newsletter-integration/Mailchimp.php
change line 77

add_action( ‘wp_ajax_ypop_nopriv_subscribe_mailchimp_user’, array( $this, ‘subscribe_mailchimp_user’));

to

add_action( ‘wp_ajax_nopriv_ypop_subscribe_mailchimp_user’, array( $this, ‘subscribe_mailchimp_user’));

But right now there is no error but email id is not getting listed in the list.

Please help me