Unable to Purchase YouTube Premium - Error Message Preventing Subscription

I am trying to purchase an individual YouTube Premium membership, but I keep receiving an error message. I had a membership before, which I canceled, and now I want to subscribe again. However, since yesterday evening, despite multiple attempts, the process keeps failing and doesn’t accept my purchase. This is very frustrating as I need the Premium features urgently. YouTube, please resolve this issue and help me complete my Premium subscription without further delays!