Sometimes you may just see "Loading...." message, especially after saving your email template.

This happens when you are having any security plugins that dis-allows saving html.

Please check if you are using any security plugins like SecurePress or WordFence, that disallows saving html.

The email template is saved as a JSON entity including the HTML design.
Since the email template is a html design, the html tags are present in the JSON string. Sometimes your security plugin would not allow it.

Here is an easy way around it

Step 1: Reset that particular template (which shows Loading message)

Please go the Email Customizer plugin settings -> Reset templates.
Choose the template in the dropdown and click re-set.


Step 2: Check the wp-config.php for the following constant:  

Most security plugins might have added the following constant to your wp-config.php file.
Edit wp-config.php file 

Find this line


Comment it out

// define( ‘DISALLOW_UNFILTERED_HTML’, true );


Once you have completed all your design work in the email template and saved, you can uncomment this line. 

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