UFO FOREO stopped working – FOREO For You Review

I purchased Ufo Foreo online with Foreo paired with app and worked fine. Then I bought a second one at Marshall, paired and worked well for two weeks. The first UFO stopped warming/cooling effect and also sometimes would not turn off. So I remove the second UFO FOREO FROM APP to see if issue got fixed, to my surprise, not only did not help, know the second UFO purchase at Marshall won’t turn on. Very frustrating. From having two units, know si don’t have any. Could someone explain if this is an app issue or faulty unit?
Review by Millie1963 on FOREO For You.