To reset your Fitbit Alta, you'll need to repeatedly press a button on your charger. But to wipe your data, you'll need to disconnect your account.
Restart > clean connections > use a different charger > replace the cable > bring the phone closer. Check Bluetooth connection > disconnect other Bluetooth devices > restart Fitbit app > check for ...
Turning a Fitbit tracker off is different from a restart or a reset. A restart will turn the tracker off and on, within one ...