I've upgraded to the new Wiser Heat app, but I can't see my smart plugs. Where have they gone?

In the new and improved Wiser Heat app, smart plugs now live in rooms, so after upgrading you may see them as unassigned. 

To get them back on your home page, simply go into settings and tap devices. Tap on the smart plug you want to assign and tap the pen next to "location" to choose the room in which it lives.