Hello,
I saw the screenshot you attached. The notifications you mentioned are WooCommerce notifications and there is no option available in theme settings to change their time. Sorry we cannot help you with this because this is out of our theme support scope.
Notifications are controlled by WooCommerce itself and our theme doesn’t influence this. Sorry you cannot change its appearance from banner to popup. It requires customization and this is beyond our limitations and support policy.
Best Regards.