title: Can't login to Firebase after I added Key restriction
body: <p>I use this code to login to Firebase:</p>
  
  <pre><code>mAuth.signInWithEmailAndPassword(txtEmail.getText().toString().trim(),
      txtPassword.getText().toString().trim())
      .addOnSuccessListener(((ActivitySplash) mContext), authResult -&gt; {
              /// do something
      })
      .addOnFailureListener(((ActivitySplash) mContext), e -&gt; {
             /// do something else
      });
  </code></pre>
  
  <p>All was perfect until I have added the package name and SHA-1 signing-certificate fingerprint to restrict key usage just by my application. After I did this I can't login anymore. If I remove restrictions all work perfectly again. Suggestions?</p>