Have you tried plugging a lamp or something into it and turning it off/on by the button on the side of the peanut ? Sometimes that helps kick it in the a$$ and get the app to update. There is little to no information about the peanut anywhere, including this forum and the WiKi. At one time you had to reset the router, then re-pair the peanut for it to work. It seems to be another one of those hit or miss things. Some people pair it up and it works perfectly including giving power use readings, others can at least get it to turn on/off, others just have a nice big wart on the wall that does nothing.
In my case I used it for the bedside lamp since the outlet was right next to the door , so I could turn on the light without walking around the bed. Of course that only works until somebody shut the lamp off at the lamp.