##We now consider this problem resolved.
The “shared OAuth” edition of SmartThings is now called “-Blue” edition, to distinguish it from the “published OAuth” edition.
It is no longer possible to install the Blue edition nor add any dashboards to it if you already have it installed. All existing installations of the Blue edition (including all existing child dashboards) should continue to function normally and will be the first to receive any updates or bug-fixes … this is now our production Beta stream. We call it Blue … because it was easy to change the icon to a blue version:
If you install SmartTiles again (don’t uninstall Blue unless you no longer want that edition and wish to permanently delete all its dashboards…), you will (also) get the “published” edition, with slots for 5 dashboards, under the traditional official Green icon for “SmartTiles (Connect)”:
For more detail, please see the SmartTiles News Post.