This is my first time purchasing and using this service. Today I bought a Pro subscription for my domain, but in "Billing - Subscriptions," I only found one subscription, which is exactly what I need. However, I discovered that I issued two invoices, and the second invoice also charged me. I was charged twice in total. Is this because I clicked the wrong button twice? The second charge is a duplicate billing, and I don't need the second service. What should I do?