Here's how:
  1. Open Concepts
  2. Go to the Gallery
  3. Tap the profile icon in the status bar
  4. Sign in to your Concepts account (if you are not already signed in)
  5. Tap in the email field and edit the address to the new one
  6. Check the new email for a confirmation, and tap the link in the email to confirm the change
That's it, you are all set.