title: why am I getting multiple firebase uid for same email id even after selecting option of "prevent users from creating multiple accounts"
body: <p>I have selected the option of "Prevent users from creating multiple accounts". (screen shot attached).</p>
  
  <p><img src="https://i.imgur.com/6zJ1dBK.png" alt="screenshot1"></p>
  
  <p>Even then for one of the accounts, I get the following details(screenshot). The email is same but there are 3 different Uid. On top of that 2 uids have the same provider(google).</p>
  
  <p><img src="https://i.imgur.com/RWKSK02.png" alt="screenshot2"></p>
  
  <p>I visited this link, but I never opted multiple accounts for one email id.</p>
  
  <p><a href="https://stackoverflow.com/questions/45914494/firebase-one-account-per-email-is-enabled-still-firebase-creating-multiple-acc">Firebase: One account per email is enabled still, firebase creating multiple accounts with same email</a></p>
  
  <p>What steps should I take so that there is always only one uid per email.</p>