After signing into Station70, you will be prompted to register your Authentication device. The use of Station70 requires an Authentication device for two-factor authentication (2FA), which is essential for important features such as registering backups and initiating recoveries.
Click "Register your authenticator" and follow the on-screen instructions to register your device. Choose a 4 to 6-digit PIN that is easy to remember and use consistently for all YubiKey-related actions. Please note: you will be required to enter your PIN twice to confirm it.
After entering your pin, follow the rest of the on-screen instructions and you will be ready to go!