I tried with Paypal, Amex, Visa, and MasterCard. Tried from different networks, browsers, in incognito mode etc. I have already raised a support ticket but I didn’t get any response. My support case number is 01554792.
I have also checked with my bank and they assure me that the issue is not from their end.
Billing issues requre a Billing ticket with Support
Nevertheless, the Community here cannot assist with Billing, Account, Trust & Safety, nor Registrar issues, which is why you need a case with Support as you’ve already created one.