Subscriptions and payment methods don’t show up

I subscribed for the 3 month free trial - but now when i want to unsubscribe , the subscription or the payment method doesn’t show up, and weirdest part is that Avast just gmailed me about an failed payment, but i logged into my avast account with the same account which the gmail was sent to - sooo does anybody have an idea? It would be great if Avast themselves could help me.