End My Educly Subscription

I made a one‑off payment to Educly around a month ago, believing it was a single purchase and not a recurring subscription. Recently I noticed that Educly tried to renew a subscription on my Revolut account several times for 39.90 USD, but the payments were declined due to insufficient balance. I was not aware that my original payment would turn into an automatic renewal, and I did not consent to ongoing subscription charges. I request that my Educly subscription be fully cancelled and that no further renewal attempts or charges are made to my account in the future. I would like written confirmation that my subscription has been cancelled and that my payment details have been removed from any automatic billing.