Hi!
Here's one tutorial I've used to try to do the sky replacement:
Everything works as expected, expect that the sky footage I've placed to replace the original sky with turns into this weird over exposed look.
I go to the color tab, place a Sky replacement effect on a node and remove the original sky. Then I place the replacement sky clip into the node tree and connect the green dot to the clip I want the sky replaced in.
Here's a screenshot of my node tree.

- Screenshot 2023-09-07 at 21.39.08.jpeg (309.44 KiB) Viewed 2959 times