Thanks for the quick reply and great support. I have fixed the ‘more videos’ link. Thanks.
However, on my laptop, it’s still showing up as ‘no preview available’ (https://i.imgur.com/ebDTo9o.jpg), though I checked on my desktop and it does display. I disabled ad-block with no luck. I wonder if any of my other plugins are causing the problem. I do remember it showing up before when I first installed it.