For this, you need to:
1/ open ZeFit mobile application, go into SETTINGS > SET UP > UNPAIR
2/ then log out from your session
3/ sign up with another email
4/ Pair your ZeFit with this new email account
[MAC or PC users] Open the software, Go to the “Device Manager” tab, click on “Unpair “ in the right hand-side of the table. Log out, and sign up with another email adress.
Note: your previous data will not be transferred to this new account