Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Running the composer update command will update any composer packages that have newer versions available.
In mobile first, your styles will inherit upwards from the smallest media query, whereas in desktop first they will inherit down from the largest media query.
The breakpoint indicator shows you which breakpoint you're viewing your website at in the bottom left of the browser.
Go to Extend > Uninstall and search for Acquia Cohesion Breakpoint indicator.
No site specific data is stored on the API.