426 Upgrade Required

[TonyAnine]

Hello, I immediately checked the number after generating the apikey, and the interface returned 426, indicating that the client needs to be upgraded. I checked that the generated apikeys are all a1XXXXXX versions, and the default apikey you provided is a2 version. I would like to ask how to generate the a2 version of the apikey. In addition, the latest version of the truecaller otp interface is this: https://account-onboarding-noneu.truecaller.com/truecaller.accountonboarding.v1.AccountOnboarding/VerifyOnboardingOtp, but it uses the gRPC protocol. Have you studied it? Thank you