The Bedside Lamp is not being detected

My Bedside Lamp 1 is not being detected with my “iPhone X” although it was working before.

  • I have rested the the lamp several times as mentioned in the manuals.
  • I have rested my iPhone networks and settings
  • I can not find the XMCTD in my bluetooth list
  • My iOS version is the latest, 12.4.1
  • Every time I try to find it, it comes back with “click to restart scan”
  • In the mean time I tried with my wife phone which is iPhone 7 and it works fine.
  • I tried my wife account and it does not work with my phone again.

Please let me know how I might solve the issue and pair it with my phone as well.