There is a planned maintenance window starting tonight (GMT). The server will be offline for several short periods.
The maintenance windows was postponed to February 10. It might affect the hosted builder for several short periods. Most likely that B4i developers will not experience any downtime from this.
The maintenance window has started. The server might be offline for one or more short periods. Sorry for the inconvenience.
There will be another maintenance window starting in a couple of hours. The server will be offline for a few minutes.