Hi,
Please check it may not conflicting with other Plug-ins so better if you Switch On/Off one by one all plug-in to find the conflict with other plugins.

Thanks,

Hi,
Please provide us with your website URL, wp-admin access, and FTP information (username and password)?
Kindly send this information using the “Set as private reply” option to ensure the security and privacy of your data.

Thanks,

Hi,
Please share list of plug-ins and their version you have installed.
if you had done any customization, do share the code as well.

Thanks,

Hi,
Are you using any kind of cache plug-in?
WP Retina 2x Version 5.6.1
LayerSlider WP Version 6.8.4
Disable both and let me know?

Hi,
Please check now and confirm me back.

Thanks,

Hi,
I added this Code in Custom Code Section:

#slider-fixed {
height: 400px; /* Adjust height as needed */
position: relative;
z-index: 999;
visibility: visible;
opacity: 1;
}

Thanks,

are you seeing on live website?

Awesome:)