Cloud accounts · Testing, editing and removing accounts
What does the refresh button in Remotes & Accounts do?
Short answer: It reloads the account list from your Mac so the window shows exactly what's connected now. It doesn't re-sign in or test anything — use Test connection on an account for that.
It reloads your list of accounts from your Mac, so the window shows exactly what's connected right now — useful if an account you just added or removed elsewhere hasn't appeared yet, or the list looks empty.
It doesn't sign you in again or test the accounts; for that, select an account and click Test connection.