If you are currently working in the free-trial period for the software you do not need to do anything. If you do not upgrade your account, your subscription would automatically end on the completion of the 30-day trial.
If you have already upgraded your account and need to cancel your subscription, you need to contact us through our support page (click here) or by calling us @ +1 (240) 750-6018. One of our support executives would help you cancel your subscription.