If you are in a trial account, if you don't select a subscription plan after the testing period is over, your account will be deleted automatically, so there is no action needed to cancel in these cases.
But if you have a paid account, cancel your subscription from the subscription page in Placker, then your data will automatically deleted after that.
These are the steps:
Click more, at the top right corner
Click "Edit Subscription"
Click "Change plan" on the left menu
Click the button "End this subscription"
