I know the logins of the previous user.
If you know the logins of the previous user, you can dissociate the watch via the software's user interface.
-Open ZeFit2's PC/MAC software
-Go to "Device manager"
-Click on the "Unpair" button located at the right side of the table.
I don't know the logins of the previous user.
If you don't know the logins of the previous user, please send us (firstname.lastname@example.org) a screenshot including the D/N number that appears below the error message.
This D/N number will allow us to track with which email address your MyKronoz device is connected, and if needed, to unpair it from this account.
[PC / MAC users] The D/N number can be found on the bottom right-side of the Software welcome page