Hi, all! Someone posted a notice about this on the MPSA Facebook group, so I thought I'd pass it along:
In order to ensure optimum performance of your Prophet server, we will be conducting routine system maintenance beginning at 11:00 PM ET for US Servers on Friday, April 26th and 12:30 AM GMT for European Servers on Saturday, April 27th. During this late-night window, your server may be offline for up to 4 hours while we install system updates and perform recommended monthly maintenance activities.