Since virtual credit cards are pre-paid, I am afraid you won’t have any luck using them as a charge method. Here you can review Amazon’s credit card requirements:

• Adequate credit available.
• No limitations on internet or mail order charges.
• Is not a ‘prepaid’ card.
• Chargeable in the currency of the Amazon marketplace where you registered your seller account.

https://sellercentral.amazon.co.uk/gp/help/help.html?itemID=202131400&language=en_GB&ref=ag_202131400_cont_G861