When logging in to https://1password.com on a new device you will be prompted to transfer your key. Following the steps below.
1. Using your phone, follow the steps below. You must check the This is a public or shared computer
2. Tap the 1Password icon in the 1Password app
3. Choose Scan QR Code
4. After scanning the 1 QR code, you will be asked to transfer your encryption key. Tap Transfer Key
5. The browser will prompt for DUO authentication and log you into your account.