[Steven Zahm]

@ Jennifer

RE: I got the same ‘down for maintenance’ message.

That is the message WordPress puts up while it is updating a theme, plugin or itself.

RE: Then, it seems to have updated and returned to normal.

This sounds as like WordPress detected the issue and installed the backup of the previous version. It makes this backup before installing a new version of a plugin. I suspect you still see the notice to upgrade Connections, correct?