As long as you haven't set up 2fa for your OpenNode account, you'll be able to continue logging in without 2fa. We recommend that you set-up your 2fa as soon as possible in order to gain access to the entire platform and to further secure your account.
Please note: Once you set-up your 2fa you cannot access your account without it. Remember to save your Secret Key and Account Password in order to regain access by contacting support@opennode.co .