Follow all steps below in order, to set up a Two-Factor Authentication on your NordPass account.
1. Go to the NordPass Settings → Scroll down to the bottom → Click Enable in the Two-Factor Authentication section.
2. A window will appear, requesting your Master Password. Enter it and click Continue.
3. You will get generated QR code and secret key. Open your mobile authentication application (Duo Mobile, Authy, etc.). Afterwards, whether scan the QR code or type down secret key. When it's done, click Continue.
All set, whenever you log out from the application, you will be required to write down your 2FA to log in.