Okay

How to disable/hide single post featured image but make it visible on blog page only?

Theme settings -> general -> advanced -> custom css - add following code:

.single-post.single-format-image .bk-post-featured-content-wrap, .single-post.single-format-standard .bk-post-featured-content-wrap { display: none; }
https://billykid.ticksy.com/faq/1178/