Go to the Support center Select Join video call appointment under Self-service tools Select join video call appointment Enter the authentication code to join the video call Enter the authenticator code to join the video call Note: the email OTP will be sent to the verified contact email you used during your chat or ticket with customer service.

Select other alternative authentication methods if your SMS code doesn't arriveOn the web Select call me instead if you can't receive the SMS code Select call me instead if you are unable to receive the code Note: Use a trusted device: If you're already logged in on another device, try completing the OTP verification on that device instead.

Disable SMS syncing across devices to prevent OTP interception. Separate accounts: use different email addresses for your authenticator and passkey accounts. Separate devices: keep your authentication and passkey apps on a secondary secure device when possible.Device safety Avoid jailbreaking or rooting your devices. Protect devices with strong PINs, biometrics, or secure locks. Refrain from visiting untrustworthy websites or installing unknown software.

At OKX, physical security keys can be used in two primary scenarios: For Passkey-based authentication To generate one-time passwords (OTPs) for enhanced security, similar to using a regular authenticator app like Google Authenticator or Microsoft AuthenticatorHow to purchase a trusted physical security key? When purchasing a physical security key, ensure you choose reputable brands like YubiKey or Ledger from trusted retailers.