I have debugged your issue and found the cause. When I activate the Parent theme on your site and the issue was resolved. Check the images for a better reference: https://i.is.cc/2ePGLrqu.png and https://i.is.cc/2ePIKi3v.png the issue is coming from the child theme.
So if you are using any Customization Code in the Child Theme then please check it with your developer, OR simply delete the Child Theme and use the Parent Theme.
Regards 8Themes Team.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.