You can change your username or password via the "Settings" option on the "My Account" page.
To get started, please log in to your account and click on the circular picture icon in the top right corner of the homepage.
A drop-down menu will appear. Choose Settings from the list.
The "Settings" section of the "My Account" page will open by default, and you can manage your username or password from here.
For username management, enter a new username in the entry box provided and click Change Username. Or, for password management, enter the current password followed by the new password and re-enter the new password to confirm. Then, click Change Password.
Take note, you must log out and log back in for the new credentials to take effect.