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@Dohubdo, he first needs to remove it from his account, then you need to add it to your Fitbit app account by selected the Set Up a Device option. Until he removes it from his account, it will still be linked to him and any activity you record will go to his account any time the Ionic is within Bluetooth range of his phone.
They will also need to remove the ionic from the list of Bluetooth devices on their phone.
When you setup the ionic to your account, the ionic automatically gets removed from their account.
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