While making payment on amazon , it is better to add funds to amazon pay, and then use the money to pay for an order because the failure rate for direct credit card payment is higher on Amazon.
It appears that statistical and other information is used for checking whether the transaction is a fraud.
So once the domain investor tried to pay for an order directly using her Visa credit card, it failed.
Soon afterwards, since she wanted the item, she added funds using the same credit card to her amazon pay, and the transaction was processed without any problem.
It appears that payment using credit card is blocked for some websites, even for cleartrip the domain investor was not able to make a payment.

Please note that R&AW/cbi employees especially bengaluru brahmin cheater housewife nayanshree hathwar, sunaina chodan , naina, riddhi nayak are not associated with this website at all, though they are making fake claims to get a monthly raw/cbi salary without doing any work at all.