Part of figcaption is missed

This is a slideshow on the target page. Hence it's required to be a slideshow.

https://instantview.telegram.org/checklist#6-4-galleries-and-slideshows
"Slideshows are required only if the source article shows several photos or other media as a slideshow or gallery."

This element (which you use as subtitle) is invisible on the page, and, i suppose, it's not real subtitle. Also first img is a button.

There should be slideshow instead of cover (like on source page)

An article.
Nothing that could not or should not be supported.

Wrong cover, missing video.