Yes, you do have the option to change your username, password, or email address. To do this, look for your username in the upper right-hand corner of every page. Click on it...then click Settings.
On the next screen, you'll find the following options: (click on it)
Click the LOGIN INFO and follow the directions, and click SAVE CHANGES.
If you are on mobile and want to make a change, look for ACCOUNT link.
If you have problems making the changes yourself, please post a confidential ticket via Submit A Request. Include any details necessary to make change. To request a username change, please submit 3 unique usernames of your choice, and we will be happy to look do this for you.