now on public its work, but it’s not working on private content

1- I purchase the theme yesterday, and I’m trying to change the icon color in the header but its not working can you provide a way to change it?

2- I have a problem with the sticky header when I change it its return to the default automatic as the attached picture

3- the product size in category small and I cannot change it but on the shop page and home it’s normal can you give me the solution for that

4- can I use wp bakery and elementor together?

thanks