Product review (1 stars): DISAPPOINTED!!!  - one sensor bad, then problems with hub and app
What a disappointment!  I followed all the hints from reviewers and got it set up.  Then, I realized the temps on the readings were wrong.  All were together as I set up the app, but one showed a temp of 17 -- the others were two degrees apart (for my purposes, that was okay).  I planned to return the bad one, but before I could, the hub went down.  No reason, just gone.

I re-set it and it started up again, and then gone.

I am returning it and buying something else.