Solved Search icon in menu display as a letter U

Try to disable this new Divi performance option: WP Admin > Divi > Theme Options > General > Performance > Dynamic Icons > Disabled

 

Kindly share your URL for us to check further.

 

Seems like a mixed content issue with your CDN.

Try to add the below code in .htaccess file:

Code:

Log In or Sign Up to view this code.

Here's a tutorial on editing the htaccess file: https://www.hostgator.com/help/article/how-to-edit-your-htaccess-file

 

Since the issue is coming from your CDN, can you try to temporarily disable your CDN & clear your cache & see if it works.

If it works, then you might want to refer to your CDN provider about it & see what they say.

Here's the CDN mixed content error on your site, which is preventing the loading of your icon font: