To change the settings in the profile, click on the user icon in the top right corner (desktop) or via the main menu (mobile). Here you can edit the profile settings. In addition to standard informations such as name, email address and password, you can subscribe/unsubscribe to the newsletter or upload a profile picture. You can upload the picture by clicking on the big round icon/picture. Alternatively, the Gravatar profile picture can be used if you have uploaded a profile picture to your e-mail address. Gravatar is a service of Automatic, the provider of Wordpress, and enables you to automatically display the same profile picture/avatar matching your e-mail address on many websites.
The option Show search box permanently when scrolling causes the upper bar containing the search box to be displayed permanently on desktop computers. If this option is deactivated, the bar is reduced as in the mobile view. The search box appears as soon as you scroll up a bit.
You can also delete your user account (delete profile). Note that this process cannot be undone.