title: Firebase 3 - We have blocked all requests from this device due to unusual activity
body: <p>I was testing my login/sign up feature and for some reason I can't understand Firebase now is blocking all requests from my device.</p>
  
  <p>I've waited one day to try again, but I still have the same problem.</p>
  
  <blockquote>
    <p>ERROR:
       "We have blocked all requests from this device due to unusual activity. Try again later."</p>
  </blockquote>
  
  <p>What should I do to have access to my database again?</p>