Two solutions are available modify your password:
The first one is to go on the Forgotten password page and insert your email address:
https://www.ulule.com/password/reset/
An email with the procedure to change your password will be sent to you. Remember to check your spam folder if you do not receive anything.
Also please be sure to insert the exact email address you registered your Ulule account with.
The second, if you still have access to your Ulule account, is to click on your name in the top right corner of the website and then on the Settings link on the menu that appears.
From your Settings page, click on the Password tab and insert your current password and the desired new one.
Note that you will be disconnected on saving the changes in order to force you login again with your new password.