You can sign out a device from an account yourself, but only from the web.
Simply log in to www.lawstack.com, and then go to My Account > Manage Devices.
After signing out the device on the web. Go to the app and go to Settings> Account and hit the refresh button in the upper right corner. And you're done.
We will add it to the app side as well in the future.
If you have further questions just contact us at support@lawstack.com.