If you are and Android user:
1. Make sure Phone's Bluetooth, GPS location and Internet is switched ON -> Unpair GOQii tracker from your Phone's Bluetooth
2. Restart your phone
3. Now Open GOQii app and try to sync your tracker.
If you are an iOS user:
1. Make sure Phone's Bluetooth and Internet is ON -> kill the app (Close GOQii app from background) -> Disable Bluetooth from Phone's Bluetooth settings (not from control center).
2. Now Launch the GOQii app -> Enable Phone's Bluetooth and then try to sync your tracker.