[Theme Horse Support Team]

Hi cem1,

We are sorry for this. This feature is not available in interface theme. It needs code customization or you need to hire a developer to fix it. You need to create a child theme and then customize the code. We have designed our theme this way.

Why don’t you try ultimate theme? There you can use real image instead of using icon too.
https://wordpress.org/themes/ultimate/

Thank you!