To manage your user settings, simply go to the top right corner and click on the icon that represents your profile, then go to "Settings"

Enable/disable double confirmation

Simply select the "Market" entry:

Manage notifications

By clicking on the "Notifications" option, you can customize how you’d like to be notified about activity on the marketplace:

If you do not want to receive any email notifications from the platform, simply scroll to the very bottom of this page and click “Turn off all email notifications”