Two methods allow you to change your Lengow password:
1. If you're not connected to the platform
From the Lengow login page, click on "I forgot" and fill in the email address you are usually using to log in to your Lengow account.
Then you will receive an email on this email box, which will invite you to chose a new password.
You can make this request once every 24 hours.
2. If you're already connected to the platform
Go to your profile at the bottom left of the page, and click on "Edit profile".
You will then have the option to modify your password (see screenshot):