Hello, @TheOne,
1- Make sure to disable the lazy load from the gallery widget settings see the image: https://postimg.cc/p98rTWK6
2- In order to solve your issue simply go to the Dashboard >> XStore >> Theme OPtions >> Theme Custom CSS >> Global and paste the below code at the bottom of the CSS box there.
.elementor-slideshow__footer{display:none !important;}
Then save settings and check back to your site after clearing the browser cache.
Regards 8Themes Team.