A user is defined as a person who has access to our mobile app or web panel at teamspoor.com.
In TeamSpoor every user id is unique and defined by their email id.
Since email is a unique id linked to a particular user, you can not change it or use an email id which was previously registered in some other account or deleted by you.
Hence, if you want to restore a user whose id is already used by someone else then you have to create a new account with different email id.
If in case you have entered incorrect email for some user, then you will have to delete that account and create a new account for him.
Hence, changing an email id of a user is not possible once registered in the system.