App getting rejected due to no sign-in demo credentials

There is no sign-in, password based login, user can login via otp inside this mobile application.

There is no username and password based login, new users have to register (OTP-based) and then they can login via OTP.

What the hell should I do? I'm stuck since months and there seems to be no solution from the support team.

Thank you for your post and appeal. We're investigating and will contact you in App Store Connect to provide further assistance. If you continue to experience issues during review, please contact us.

App getting rejected due to no sign-in demo credentials
 
 
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