I'm not fluent in Spanish, so I went with Google Translate,. The information you gave me seem to come from the Kickstarter page, right? I was asking what the status on the bank was.
But anyway when it says:
"tarjeta no es valida" The card you put in either contains wrong info or is of the wrong type, from Kickstarter:
You can use a debit or credit card associated with Visa, Discover,
JCB, MasterCard, or American Express. Discover and JCB cards are
currently only accepted for US-based projects.We do not currently
accept Maestro or Visa Electron cards. If using a pre-paid credit card,
please make sure that the card has a value of at least $1 more than
your pledge amount.
And when it says "dicen que no han podido procesar el cargo por el emisor de la tarjeta" it means that the charge has been declined by the bank.
This is usually because some kind of auto fraud protection for either internet purchases or over boarder ones, so to fix this you need to make sure nothing like that is activated when you try to "fix your pledge"
This is very different between different banks, it can either be something you yourself manually remove, or it can be that you need to contact your bank and tell them that a charger will come from KICKSTARTER.COM Brooklyn NY and how much you pledged. This has fixed it for some other backers.