I just purchased a TomTom GO 5100 from someone. On this device (so NOT on MyDrive Connect, that works fine) I need to login to be able to use the functionality of MyDrive. However I am not able to modify the old username (emailaddress) of the previous user. I can only type in the password (that I don't know and that wouldn't be useful anyway). How to solve this?
(Please do not tell me to factory reset the device… I just spend a few hours configuring…)