Hi, we are sorry to hear you are having issues with your eBook account. First of all please can you check you have registered correctly - please see here : https://help.intostudy.com/support/solutions/articles/26000009429-how-do-i-register-for-my-garnet-ebook-
Remember, when you click the Submit button Garnet will send an email to your inbox. The email contains the username and the password you have used to create the account. It also contains a link ('You can access your ebook from your browser') to enable you to login back into the Garnet eBook reader in future.
If you are still having issues please look at the articles here for your device type: