Steps to RESET (troubleshoot pairing) if tag cannot be searched by Find My App (iOS):

Must place tag close to your iPhone (with bluetooth turn ON),

Step 1 = Open case and remove old battery,

Step 2 = Bottom of Find My App, press "Remove item"

Step 3 = Replace new CR2032 battery, close case,

Step 4 = Perform RESET (press tag button 4 short and 1 long until hear sound) ,

Step 5 = Add the tag again ("Other Supported item") in Find My App