It can of course happen that a customer or employee types in the wrong email address. You can solve this in the Admin.
Go to Search → Subscriptions and find the subscription for which the email address needs to be changed. Click here for more information about searching in the Admin. Select the correct subscription and click 'Details'.
Select the account holder from the tabs and click on 'Change account owner'. Enter the correct email address in the bar below 'Search for an existing contact'. You will probably now receive a warning that no contact was found that matches the specified criteria, asking if you would like to create a new one. Click 'Ok'.
The email address is now correct. Click 'Save'.
The adjustment applies to one subscription. If more subscriptions have been purchased by the account holder, they must be transferred in the same way as described above. However, the system will now recognize the correct email address, because it is now stored with the newly adjusted subscription.