The following options can be viewed by going to Settings -> General.
A Wallet ID (also called your Wallet Identifier) acts similarly to a username you'd use to access your email, or log into Facebook. To log into your wallet, you'd use your Wallet ID, password, plus any form of Two Factor Authentication you've enabled.
It looks like a string of letters and numbers, like the sample Wallet ID below:
A Wallet ID is only used for the login process, and it's different from a bitcoin address. In other words, it can't be used to send or receive funds. For security reasons, we strongly recommend you don't share your Wallet ID publicly, or with anyone.
Mobile App Pairing Code
A pairing code is a QR code that will allow you to sync your existing web wallet with an iOS or Android device. Before pairing, make sure you've downloaded and installed the latest versions of our wallet for iOS or Android. Once you've opened the app, follow the 3 steps indicated for existing wallets.
To pair your mobile device, you'll be asked to log into your wallet from a computer.
To display the pairing code click on Show Pairing Code.
Once this QR code displays, you can scan it with your mobile device.
As with your wallet ID, you should never share your pairing code with anyone. The pairing code grants full access to your wallet and its funds. It should be used only by you, when you want to access your wallet on your mobile device.