Can I delete my account? Can I recover it back if I change my mind?

On HTC account website (account.htcvive.com), sign in first to your HTC Account.  Go to bottom of the profile page and click Delete my HTC Account and data. You'll then see the account termination page.  Please read the termination details and statement carefully, and then follow the instructions in the page if you're certain you want to delete your HTC Account. This action cannot be reversed.