If you make a mistake in signing in, or if you want to sign in to a different account, you must log out once by following the steps below.
Web
1. Click on the upper right "?" and select "Logout"
2. You can log out of your current account and sign in again
App
1. Tap "≡" in the upper left corner and select "Settings"
2. Tap "Logout" and select "Logout" again
3. You can log out of your current account and return to the sign-in menu