Missing customizations

Hi, thank you for this nice theme.

I’m trying this lite version but I can’t do the customizations listened here:

https://sktthemesdemo.net/documentation/skt-restaurant-doc/#playing-with-customizer

Header image doesn’t appear even if it is set, there are no options to select the slider images and the images of Homepage Three Boxes Section, or the option to hide those sections.

Are those bugs or limits of the lite version?

Thanks in advance!