Hi,

2, The cause is setting on Homepage for it is best_sales. I’ve replace

<block type="slider/list"  name="slider.list.default">
	<action method="setConfig">
		<name>
			<title>The best digital devices</title>
			<product_order_by>best_sales</product_order_by>
			<pretext>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco</pretext>
		</name>
	</action>
</block>

To:

<block type="slider/list"  name="slider.list.default">
	<action method="setConfig">
		<name>
			<title>The best digital devices</title>
			<product_order_by>created_at</product_order_by>
			<pretext>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco</pretext>
		</name>
	</action>
</block>

3, Do you have any custom? Because wishlist and compare is not work