How to fix error ( Kallyas theme visual editor zion builder stopped working. After upgrade of Icegram Express – Email Subscribers, Newsletters and Marketing Automation Plugin )?

Sometime when you use this plugin

https://wordpress.org/plugins/email-subscribers/

and you use Kallyas theme for Wordpress

https://themeforest.net/item/kallyas-responsive-multipurpose-wordpress-theme/4091658

you can have this problem:

With version 5.3.5 ( of email plugin ) and above you may have issue with kallyas theme visual editor named zion builder. I mean visual editor just stopped working at all in kallyas theme on your wordpress website.

How to fix error ( Kallyas theme visual editor zion builder stopped working. After upgrade of Icegram Express – Email Subscribers, Newsletters and Marketing Automation Plugin ):

1. Install Wordpress plugin WP Rollback https://wordpress.org/plugins/wp-rollback/
2. Go to wordpress admin -> Plugins 
3. Find Icegram ( or email subscribers ) plugin and click on it on Rollback link
4. Select version 5.3.4 or lower and click rollback and confirm your selection
5. Activate email & subscribers plugin 
6. done Kallyas zion visual builder will work again