Answer
Your email address changed? At the moment, the only way to adjust your email address in JOIN is creating a new employee account and — in case you are the account owner — transferring the ownership rights of your company account to it.
Sounds complicated? Don’t worry, it can be done quite easily:
That’s it already. After successfully transferring the owner rights, you will find the blue owner badge on your new account in the team overview. If necessary, you can remove the previous account via the cross symbol on the right.