MeLab.io Subscription Cannot Be Cancelled – Request Immediate Cancellation

I subscribed to a service on the MeLab.io website about a month ago and now I want to cancel my subscription because I do not like this application. However, in my account on MeLab.io there is no visible cancel button or any option to terminate the subscription. Because of this I cannot unsubscribe on my own. During this period 0.99 USD has already been charged from my card for this subscription. I request that my subscription on melab.io be cancelled immediately and that no further payments be taken from my card. I also ask you to review the interface and provide a clear and accessible option for users to cancel their subscriptions.