Can't change password on the second account in My Telus

A family member who has an account in my account is in the process of migrating. They asked him to change his password in his account. We tried multiple times during the day, without success. We follow all the rules for passwords, Telus sends us a code to verify it's my account. We enter the code and the new password and all we get is a "sorry, something went wrong." Very frustrating. Any help would be appreciated.