If you want to log out of your Aura App, either to log in with a different account or as part of troubleshooting, you can do so by following these simple steps:
1) Tap on the "A" in the top left corner
2) Then, tap on your name (= "view account")
3) Then, scroll down to and tap on "Account Data"
4) Tap on "Log Out" to log out of your Aura account