Lingoda Makes It Difficult to Cancel a Subscription

I signed up for Lingoda a week ago, but I have realized that it is not an effective platform for me and does not meet my needs. I want to cancel my subscription. My next payment is scheduled to be charged tomorrow, but there is no option or section to cancel my membership. Does this mean it's easy to sign up but impossible to leave?

Please cancel my subscription immediately and make sure no further payments are taken from my account.