Log on to the merchant portal at https://portal.payconiq.com and click on the “Users” tab.   

If the user has already activated his/her account (see the “status” column), it is not possible to change the user’s email address. You have to deactivate their profile and create a new user profile.   

If the user has not yet activated their account, click on the 3 vertical dots to the right of the user’s line and then on “Modify user“. Modify the desired elements and click on “Save“.