Cannot add client side API

Cannot add client side API

What I should I do here to pass the JavaScript Domain Validation?

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      • Deprecation of SMS-based multi-factor authentication (MFA) mode

        Overview of SMS-based OTP MFA mode The SMS-based OTP MFA method involves the delivery of a one-time password to a user's mobile phone via SMS. The user receives the OTP on their mobile phone and enters it to sign into their account. SMS-based OTPs offer