Another issue is when I change the size of images in settings of a gallery, it doesn’t affect the size of images on the page.
Pffff, my bad! I didn’t clean a cache. Thanks for responds!
Here is a screenshot:<br>
https://pasteboard.co/IlcckRO.gif<br>
As you can see, I did a shortcode and clicked a preview. Content doesn’t show, as well as the code is there, on page.
Same problem with my website after updating WP Instagram Gallery plugin. WordPress version is 5.2.2.