The vcc is bad... the vccs I use have to be added in 24 hours.
Not all. Some sellers will give you a longer period of time to add it on. End of the day we're all running businesses, so may not have time to add it/confirm it right away.
I already face this issue, call paypal they will help you. This is a system error.
I wouldn't do that. If a card is declined, contact the seller to establish if the card has sufficient balance and is still active, prior to contacting PayPal.