Hello @KellyW955 ,
You can let this account run out of time naturally, and it will eventually go into a defunct state. If you'd like to make a new trial account, feel free to go to the main website and click the Sign Up Free button. There you can simply type in a different email to use as the main username. If you need to have the email address available for the new account, you can log in to this current account and change the username to something else. If you're unable to login to this current account, you'll need to call in for account security reasons to get the username for the current trial changed to something else.