Prosites: Access Level to Premium Themes

On my localhost I've set up 4 Levels, have one site with top level access, I can't activate a theme which all levels should be able to use as it is set to the lowest level.

When trying to activate the theme, is says it's only available for the lowest level.

My understanding is when Level which has equal level access or above should have access to below levels, just as with premium plugins?

for 2nd top level I have set one theme and my top level site can't even activate it!

I am logged in as network admin on this site. What is it not working or I'm misunderstanding here?

In ProSites > Manage Sites > Manually Extend Pro Site Status. I ticked; Permanent and still no access to this theme.

Dennis