Yahoo feed blank in lightbox popup

I am using this feed in your plugin https://au.finance.yahoo.com/news/category-currencies/?format=rss and I correctly get feed items created as posts, but when I click on a post title lightbox pops up with absolutely nothing in it except for the close button. Other feeds I have added like ones from Reuters.com work fine in lightbox. So I’m not sure what the problem with Yahoo is, I thought the sites page would just load up as normal in lightbox. Any ideas?

https://wordpress.org/plugins/wp-rss-multi-importer/