did you view same page on your mobile device?
Login with OTP over mobile number is possible via miniOrange 2fa ‑ OTP Login Application . You can allow customers to Login / Signup with Mobile number . Also, you can allow customers to enable two -factor authentication and allow them to login with the combination of username-password and two factor (OTP over email/SMS , Google Authenticator, Push Notification , Security Questions , etc. ) Checkout more information about their application here