How do I log out?

On a Desktop

In the upper-right corner, click the down arrow next to your username, then click Logout.

 

On a Mobile Device

In the upper-left corner, click the 'hamburger' (see below) to expand the drop-down menu.  Then click your username; click Logout.

                               

In the iOS App

Click Account at the bottom of the screen and then click Logout.