Rudimentary

Anything that is not essential to the article in question should be removed from the Instant View page.

https://instantview.telegram.org/checklist#4-content-to-be-removed

This elements has classes:

.save-timestamp 

.hide-if-no-js 

.button

IV doesn't support javascript – so it must be removed.

Look how this page should looks like:

https://instantview.telegram.org/contest/gizchina.cz/template30/?url=https%3A%2F%2Fgizchina.cz%2F2018%2F11%2F18%2Fna-tomtop-bezi-velka-slevova-akce%2F

And You saw this page https://instantview.telegram.org/contest/gizchina.cz/template26/issue1/

So You had to delete it