Our payment processor has informed that they are making a 30-minute maintenance on 24th November, between 04.00 UTC - 04.30 UTC.
During this time new AWS Credit purchases made with credit card are not possible. PayPal is working normally during that time...
And to be clear - this does not affect any users who already have Credits or are playing in the game. The maintenance is only in the system that processes any new orders/payments you are making during that 30 minute timeframe.