How to update the photo displayed in your account
Log into your account, click your user icon in the upper right hand corner of the dashboard, then select "Profile".
Alternatively, this may also be accessed through the sidebar via "Settings", if you are not actively in a campaign.
By default you should start on the Profile tab, if not, click Profile from the Settings page menu.
Click Upload New Picture to launch file explorer.
Choose a photo from your local PC (any common image file extension), then click "Save" in the bottom left.