[COMPLETED] 1 hr Planned downtime Wednesday (6/12) @ 10 AM PST
 

From the announcements thread:

On Wednesday morning (June 12th) at 10 AM Pacific time we're planning on taking Hero Lab Online and our account/sales server down for maintenance. We expect up to about 1 hour of downtime, though it may be less. Because the account server is involved, new logins to Realm Works will also be unavailable during the maintenance.

UPDATE: This has been completed.