title: limit for access tokens
body: <p>I'm creating a app that uses Giigle Drive API.
  The Google's document says that there is a <strong>limit for access tokens</strong> issued per client-user combination.
  It is said 15, 20, 50.(I don't know exact number)</p>
  
  <p>But in my case, the limit of number seems to be just one.</p>
  
  <p>I installed my app to several Android machines.
  <strong>The first machine can get access-token and refresh-token at one time.</strong>
  But in case of the second one and after, <strong>only access-token</strong> can be acquired.
  i.e. no refresh-token.</p>
  
  <p>Does anyone know how to solve the problem  or increase the number?</p>
  
  <h1>==============================================</h1>
  
  <p>Sep.13 2017 </p>
  
  <p>Thank you very much "Tanaike" for the kind advice. My explanation was not good. (because I'm not native English speaker.)</p>
  
  <p>Anyway, let me explain again.</p>
  
  <p>Here I have three android phones, #A , #B , #C. And I installed my app to all of them.</p>
  
  <p>At first, #A sends request for the access token to Google. Then I allow the request for my Google account GGG@gmail.com Then #A can get access token and refresh token.</p>
  
  <p>Next, #B tries the same thing to the same account GGG@gmail.com. Then #B can get access token but no refresh token.</p>
  
  <p>And next, #C tries the same thing. Then #C can get access token but no refresh token.</p>
  
  <p>In such a situation, #A can get another access token before it is expired. But #B and #C cannot get new access token. They only have to wait when the access token is expired.</p>
  
  <p>That I would have liked to write.</p>
  
  <p>Regards,</p>
  
  <p>==============================================</p>
  
  <p>Sep.18 2017</p>
  
  <p>Thank you "Tanaike".
  I've not been able to touch this subject for a while, sorry.
  I've tried "access_type=offline" .....
  but in fact, I've found that I had already included "access_type=offline" from the first time.</p>
  
  <p>So that mean, after #A gets refresh-token, #B , #C and later machines cannot get refresh-token
  even though "access_type=offline".
  This is a regrettable result.
  I'd like to know the way how to provide refresh token to each device.</p>
  
  <p>==============================================</p>