Click the gear icon in the bottom menu to open your Account page.
If you are an approved vendor on the site, you will have a personal account page AND a brand account page for every brand you manage. Click the menu in the top right corner to switch between your personal account page and your brand account pages.
Clicking the green My Preferences button opens a page where language, location, and mailing list preferences can be managed.
The language preference currently affects which language the site opens in. It is still possible to switch between languages from the menu in the top right corner. In the future, the language preference will determine the language of your email notifications and mailing lists.