The light was still flashing red. I found no option to clear the alarm in the app, manual nor company website. I tried unmuting which again took a full minute. I did another reset and had to go through the entire pairing and set up process again including wifi connection. Same thing happened. Defective item. Will return and get a d-link.
https://www.amazon.com/Lyric-Wi-Fi-Water-Freeze-Detector/dp/B01HBZQYYC