Hello @Htun, good to see you around and thank you for your feedback. I would like to ask you if you are experiencing syncing issues lately? Note that the Bluetooth connection should be reliable and stable all the time, so apparently you are having issues with this.
I would like to know more details, but in the meantime, I recommend to review the following post with different tips for syncing issues: Syncing troubleshoot for iOS devices.
The syncing issues can be for different reasons not limited to the tracker; so let me know if you need more help.
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