To cancel your TrackSub subscription, first:
Head over to the Settings page in the header
Click on the Plan & Billing option on the left-hand menu
Then click the Manage Billing button to launch the billing portal
Once in the billing portal, click the Cancel plan button on the right
If you would like to still proceed, then click the Cancel plan button again to initiate your cancellation
You will still have access to paid features until the end of your billing period.