Wrote an answer, but it disappeared. I’ll write again.
I have checked on my project. Everything works. I will write how I do, compare with how you do.
1. Create a group of fields (in my case for posts)
2. Create a post. I fill in the created fields.
3. open the page template for the post. I add the code
$video = get_field('video_section');
var_dump($video);
4. I open the post and see this
array(3) { ["video_link"]=> string(18) "https://my-link.com" ["video_header"]=> string(5) "Title" ["video_subheader"]=> string(8) "Subtitle" }
What are you doing differently?
