Under 
→ 
you will find information about your current plan.
If you want to cancel your plan, you can scroll to the bottom of the page. There you can select «Cancel Plan»:
A draft email opens, in which the email recipient and the subject are already entered. Please inform us in the email that you want to cancel your plan and don't change anything in the subject, so that we also deactivate the right project.
You will receive an email confirmation as soon as we register your cancellation order. Once your subscription expires, the project will become inactive.