If you see that your carousel is not scrolling, usually it means your theme has incorrect style for app section.
You can fix it with simple steps:
Find section with Storista and click on "Apps"
2. Expand Custom CSS section
3. Paste this style in textarea
.shopify-app-block {
width: 100%;
}
4. Save changes.
If you still experience the issue, please let us know in the chat.