[FIXED] Firebase captcha check fails and prevents user from authenticating

Issue

I dont have idea why this error pop up . When I run the app on other device the app goes well but when I face issue on other device . Also I have issue while I am accessing firebase via wifi . I have contacted firebase support they say in INDIA they are facing issue with server and isp

otpVerification.kt

const val USER_REF:String="user"
class OtpVerification : AppCompatActivity() {


lateinit var  auth: FirebaseAuth

private var mAuthVerificationId: String? = null

private var mOtpText: EditText? = null
private var mVerifyBtn: Button? = null

private var mOtpProgress: ProgressBar? = null

private var mOtpFeedback: TextView? = null

lateinit var email:String
lateinit var password: String

private lateinit var database: DatabaseReference

lateinit  var uname:String


lateinit  var mCurrentUser: FirebaseUser
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_otp_verification)


    mAuthVerificationId = intent.getStringExtra("AuthCredentials")
    Log.d("AuthCredentials", mAuthVerificationId.toString())

    email= intent.getStringExtra("email").toString()
    password= intent.getStringExtra("password").toString()
    uname= intent.getStringExtra("name").toString()

    mOtpFeedback = findViewById(R.id.otp_form_feedback)
    mOtpProgress = findViewById(R.id.otp_progress_bar)
    mOtpText = findViewById(R.id.otp_text_view)


    auth=Firebase.auth

    database = FirebaseDatabase.getInstance().reference


    mVerifyBtn = findViewById(R.id.verify_btn)

    mVerifyBtn?.setOnClickListener(View.OnClickListener {
        val otp = mOtpText?.text.toString()
        if (otp.isEmpty()) {
            mOtpFeedback?.visibility = View.VISIBLE
            mOtpFeedback?.text = "Please fill in the form and try again."
        } else {
            mOtpProgress?.visibility = View.VISIBLE
            mVerifyBtn?.isEnabled = false
            val credential = PhoneAuthProvider.getCredential(mAuthVerificationId!!, otp)
            signInWithPhoneAuthCredential(credential)
        }
    })
  }

  private fun signInWithPhoneAuthCredential(credential: PhoneAuthCredential) {
    auth?.signInWithCredential(credential)
            ?.addOnCompleteListener(this,
                    OnCompleteListener<AuthResult?> { task ->
                        if (task.isSuccessful) {

                            createAccount(email,password)
                            mCurrentUser= auth.currentUser!!
                            Prefs.put(this, mCurrentUser)
                            Log.d("user",mCurrentUser.toString())
                            sendUserToHome()
                            Log.d("TAG", "Task is succesful")
                            // ...
                        } else {
                            if (task.exception is FirebaseAuthInvalidCredentialsException) {
                                // The verification code entered was invalid
                                mOtpFeedback?.visibility = View.VISIBLE
                                mOtpFeedback?.text = "There was an error verifying OTP"
                            }
                        }
                        mOtpProgress?.visibility = View.INVISIBLE
                        mVerifyBtn?.isEnabled = true
                    })
 }


 fun sendUserToHome() {
    val intent = Intent(this, MainActivity::class.java)
    intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
    startActivity(intent)
    finish()
}

private fun createAccount(email: String, password: String) {
    Log.d("TAG", "createAccount:${email.toString()}")
    //Log.d("TAG", "validate form is ${validateForm().toString()}")

    // [START create_user_with_email]
    auth.createUserWithEmailAndPassword(email, password)
            .addOnCompleteListener(this) { task ->
                if (task.isSuccessful) {
                    // Sign in success, update UI with the signed-in user's information
                    Log.d("TAG", "createUserWithEmail:success")
                    val user = auth.currentUser

                    Toast.makeText(baseContext, "Authentication Success $user", Toast.LENGTH_SHORT)
                            .show()
                    sendEmailVerification()

                    val intent = Intent(this, MainActivity::class.java)
                    intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP
                    startActivity(intent)
                    Log.d("Delete", "deleting activity signup")

                    finish()

                } else {
                    // If sign in fails, display a message to the user.
                    Log.w("TAG", "createUserWithEmail:failure", task.exception)
                    Toast.makeText(
                            baseContext, "Authentication failed.",
                            Toast.LENGTH_SHORT
                    ).show()
                    //                   updateUI(null)
                }

                // [START_EXCLUDE]

                // [END_EXCLUDE]
            }
    // [END create_user_with_email]
createUSer()
}

private fun sendEmailVerification() {
           // Send verification email
    // [START send_email_verification]
    val user = auth.currentUser!!
    user.sendEmailVerification()
            .addOnCompleteListener(this) { task ->

                if (task.isSuccessful) {
                    Toast.makeText(baseContext,
                            "Verification email sent to ${user.email} ",
                            Toast.LENGTH_SHORT).show()

                    Log.d("TAG", "sendEmailVerification")
                } else {
                    Log.d("TAG", "sendEmailVerification", task.exception)
                    Toast.makeText(baseContext,
                            "Failed to send verification email.",
                            Toast.LENGTH_SHORT).show()
                }
                // [END_EXCLUDE]
            }
    // [END send_email_verification]
}

fun createUSer(){
    database.child(USER_REF).child(uname).child("email").setValue(email)
    Log.d("CREATED","create user"+uname)
}


}

logcat

2020-11-11 17:57:45.290 28364-28364/com.bva_valai_pada E/zza: Problem 
retrieving SafetyNet Token: 7: 
2020-11-11 17:57:45.358 28364-28364/com.bva_valai_pada W/ActivityThread: 
handleWindowVisibility: no activity for token android.os.BinderProxy@5308a64
2020-11-11 17:57:45.873 28364-30352/com.bva_valai_pada E/FirebaseAuth: 
[GetAuthDomainTask] Error getting project config. Failed with {
  "error": {
    "code": 400,
    "message": "INVALID_CERT_HASH",
    "errors": [
      {
        "message": "INVALID_CERT_HASH",
        "domain": "global",
        "reason": "invalid"
      }
    ]
  }
}
 400
2020-11-11 17:57:45.919 28364-28364/com.bva_valai_pada E/zza: Failed to get 
reCAPTCHA token - calling backend without app verification
2020-11-11 17:57:45.962 28364-28364/com.bva_valai_pada I/AssistStructure: 
Flattened final assist data: 4392 bytes, containing 1 windows, 13 views
2020-11-11 17:57:45.966 28364-28410/com.bva_valai_pada W/System: Ignoring 
header X-Firebase-Locale because its value was null.
2020-11-11 17:57:46.611 28364-28410/com.bva_valai_pada E/FirebaseAuth: 
[SmsRetrieverHelper] SMS verification code request failed: unknown status 
code: 17093 null
2020-11-11 17:57:46.621 28364-28364/com.bva_valai_pada D/Exception: 
com.google.firebase.auth.FirebaseAuthException: This request is missing a 
valid app identifier, meaning that neither SafetyNet checks nor reCAPTCHA 
checks succeeded. Please try again, or check the logcat for more details.

Solution

Ah, it looks like you need to add a SHA-1 Certificate Hash to your application registration in the Firebase Console. I think you can find instructions to do that here

Answered By - Malcolm Deck
Answer Checked By - Katrina (JavaFixing Volunteer)