If you are looking to cancel your membership, follow these steps Otherwise, follow the below steps to deactivate your account:
Log in to your account and click on your profile picture.
Select Personal Setting from the drop-down menu.
Click on the Deactivate Account button.
Provide a reason for deactivating your account and then click Confirm Deactivation.
After that, you will get a confirmation email about account deactivation.
Don't forget that: a) There should be no pending book dues. b) Your membership should not be active. c) There should be no projects in the "open, in-progress, or disputed" state.
Please note that if the above conditions are not me, the account deactivation button will not be visible.