Subscription-related actions can only be performed by the organization owner.
Sign in to My Account section
Click your account icon in the top-right corner to reveal the sidebar.
Click on Manage Billing
See your plan details on top and click Cancel my plan.

Once you cancel your Getyn subscription, all the applications associated with your account will be moved to the corresponding application's basic plan without any loss of data. The basic plan can either be free or trial expired. You can access the data in the respective standalone application.
Sign in to My Account
Click your account icon in the top-right corner to reveal the sidebar.
Click on Manage Billing
Click Cancel my plan beside Subscription Details.