To change your profile photo, please sign in and click on your user photo located at the top left of the page.
You will then be prompted with two options. One to upload a new photo from your device, or one to choose a pinboard photo you have previously uploaded.
Once you have selected the photo, just click on update. That's it!
You can also change your photo through the navigation menu.
Click on the navigation button (to the right of your profile picture) and select the heading 'Settings'. Next select 'Upload your photo'.