Hi Rik,
To reset your original password as you remember it, or to change it to one you prefer:
* Login with your temporary password
* Click on your user name at the login spot on the upper right and choose "Edit Profile" from the drop-down menu
* On your Edit Profile page, scroll down to the 2 "Password" text boxes
* Delete all the dots in both Password boxes and enter your password in both boxes
* Scroll all the way down and click on "Submit"