**UPDATED***
For anyone still looking, I found a workaround for autoplaying a Summary Carousel Block. It autoclicks the next button every three seconds.
Inject this is Settings > Advanced > Code Injection > Footer
<script>
window.onload = function() {
var nextArrow = document.querySelector(".summary-carousel-pager-next");
function clickNext() {
nextArrow.click();
}
setInterval(clickNext, 3000);
};
</script>
I updated this code to remove the use of JQuery (for page speed reasons) as well as to help with the refresh timeframe.
This is because your dark grey theme is set as your default theme. You can change which theme is the default in the Squarespace App. This will also change the background colour of your search page and shopping cart page.