On this page (https://yochaigal.itch.io/cairn) your credit for "Cover art by Cosmic Orrery Games." is not readily visible.
You have a span inside the paragraph (or 'p') tag with a background-color set to "var(--itchio_white_back". The link (or 'a') tag is similarly set to the same background-color value.
I hope that helps.