Please remove account 3058220 - there doesn’t seem to be an option to remove it in “Subscription” section nor anywhere else in account settings.
I made the account in Europe region, which turned out to be a mistake - newrelic-ruby-agent does not seem to work there. All I could get was “Agent received a ForceDisconnectException from the server, disconnecting. (410: Gone)”
I’ve since created new US account which works.