The Estimote Android app says the owner is "Not you" but,

… but my Estimote web dashboard says these beacons are mine.
This “Not you” started happening today (after being able to configure the beacons for several months).
What can I do to fix this?

Hi bbrd,

usuallty, relogging into the app should fix similar issues.
Some other things you can try are: restarting your device and reinstalling the app.
If that doesn’t help, please send me a PM and I’m sure I’ll be able to find a solution.