How do I reset my username or email address? – Cheqbook Support

Your username at Cheqbook is the email address you used when you registered. You can change this email using the steps below.

Login to Cheqbook at https://cheqbook.com
Click on user icon at the upper right part of the screen
Click "User Profile and Settings"
Click "Change" next to your email address.
Enter a new email address .
Enter your password for additional confirmation.
Click "Save".
You should receive a confirmation email in the new email address.
Click the verification link.
If asked for login credentials, you need to use the old email address and the password.

NOTE: For steps on changing your password, use the following article.