Dedicated SSL Certificate Payment Problem Turkey.
PayPal is banned in Turkey. Do you have different payment method?
Documentation says Credit Card and PayPal. Do you have MasterCard or VISA?
Yes, there is a MasterCard. how can I make the payment
In your Cloudflare dashboard, your Profile menu in the upper right corner has a Billing option. Once you get there, there is a Payment Method section where you can add a credit card.