To modify your subscription to the newsletter, log into your account by clicking on "Log-in" at the top right of the screen.
After logging in, click on your name. On click, a drop-down menu appears on the screen. Then click on "Settings".
Then, you arrive on the "Account Settings" page.
At the bottom of the page, in Mailing List section you can uncheck the box and click "Update Account".
Once validated, this change will be taken into account automatically.