Different Steinberg Accounts

I understand that I have three different accounts that can have their own different passwords:

  1. MySteinberg
  2. This Steinberg forum.
  3. The Steinberg shop [Asknet?].
    I changed my passwords to 1 and 2 to something that I felt was more secure but where do I go to change my password for the Steinberg shop?
    Can someone give me a link?
    many thanks