Hello, @Farhad,
Actually, there was a CSS code which is causing the issue. The mobile panel was not there to see when I debug the console code to find the cause. So I added a custom CSS in the XStore >> Theme Options >> Theme Custom CSS >> Global at the bottom of the box to solve your issue. You can see the code in this image: https://postimg.cc/xcZxfqHn
Regards 8Themes Team.