Good questions, and thanks for asking because others are probably interested as well.
I found a document (look at http://media.aerohive.com/documents/532692948_Cloud-Services-Platform-Overview.pdf) which discusses some of your questions.
In general, no information that is traditionally considered personal or sensitive is logged, nor are log entries associated directly with users; however there are some indirect associations that could allow you to forensically follow the breadcrumbs from a log entry back to a purported user identity.
To answer your TLA question, Aerohive is not a telecommunications carrier, so we are not required to facilitate lawfully authorized electronic surveillance. To the best of my knowledge, Aerohive has not been approached by any law enforcement or intelligence agencies but if we were we would comply with all lawful requests.
Did this answer your concerns?
You can tell where your HMOL instance is house by the server name. It will be in the format hm-xxx-yyy.aerohive.com where the xxx indicates whether the server is housed in Australia, Europe or the United States.