For resetting your password, you will have to decipher the e-mail address that you had used. Then in the URL bar of a random web browser, type and tap enter as well. As you see the Forgot password page, you have to enter the e-mail address. Choose the Submit button and a recovery password will sent to your mail ID. Then click the link in the mail and this will be valid for n hour. But before that, surf to the and activate the device

Favicon | Create Roku Account | How to Activate Roku

Set up the Roku device and perform the Roku activation process via and stream your favorite channels and contents.