if you wish to cancel auto-renewal at any time, you can easily do so from your account page:
http://www.chess.com/home/account.html
PayPal users, please note that you must also cancel the renewal from within your PayPal account. Here are the steps:
Log in to your PayPal account.
Click Profile near the top of the page.
Click My money.
Click Update in the My preapproved payments section.
Click Cancel or Cancel automatic billing and follow the instructions.
Resolved: quit from upgrade member
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If some one being a member (premium member), how he/ she can stop whenever they don't want to.