Select the checkbox next to Keep me signed in on the QR screen on your computer or Portal to stay logged in on this device.
Use your phone to scan the QR code on your computer or Portal. If you're logged in to another device when trying to scan the QR code, you'll have to tap:
Android: Scan QR code
iPhone: Scan QR Code
If prompted, tap or select Done.
Note: You can only be logged into one session at a time across WhatsApp Web, WhatsApp Desktop, and Portal.
Log out
You can log out of WhatsApp from WhatsApp Web or Desktop.
Open WhatsApp Web or WhatsApp Desktop.
Click Menu or above your chats list > Log out.
To remove your WhatsApp account from Portal, please read this article.
Log out on Android
Alternatively, on Android, you can log out of WhatsApp Web, WhatsApp Desktop, or Portal device from your phone.