Please first make sure that you are logged in Login section with the same details you used during the registration.
The same works if you have started to use a new device and would like to restore coins.
To learn more about Login section, please click here.
If you still unable to restore coins, please feel free to contact us. Click here, to submit a new request.
Note: don't forget to let us know your email or Facebook account you used to register and amount of coins lost.