Even though the 'Carousel' Addon & 'Fullscreen Slider' are paid extensions we recommend them as they have been created for use with Laytheme specifically.
Also please make sure of the following before proceeding:
Wordpress, Lay Theme & Laytheme's Addons are all up to date ?
Any custom CSS or JS that may interfere is temporarily removed.
Any third-party plugins are de-activated to see if this resolves the issue.
If using a WordPress Cache plugin, disable it or clear your cache.
License key not activated - (in website blank situations or button not available)
If your WordPress Dashboard shows a warning "PHP Update required”
Please update your PHP version in your webhost control panel.
Possibly your website is running PHP 8.0 this has been known in some cases to cause issue.
Additionally take a look at https://laytheme.com/troubleshooting.html
Talk soon Antonini & best wishes :)