Hi @RQQQQQ, thank you for your feedback!
The home button is shown as a dropdown because it is intended to act as a place selector. Some users have more than one place (more than one dashboard), so they can switch between dashboards with this dropdown menu). And the ‘Refresh place list’ is to refresh this selector when a new place is created or removed (this ‘Refresh place list’ button doesn’t reload the whole webpage like pressing F5 on a PC browser/scrolling to the top of the page, then pulling down the browser on the phone to refresh).
For example, I have multiple places. It will show all the places I have in the dropdown list:

By the way, in your case, I assume that you would like to use the refresh button to refresh your current dashboard. Is that correct, or is there a specific case you would like to use it for?
Thanks!