Yes, I have money on the card( I know thats the first thing thats going to pop into peoples head)

I had to enter the info a few times because it kept saying that the address' didnt match from the info on the card to what I typed in. It was really picky but it finally went through and now it says the payment was denied. Did I enter it too many times and a block has happened? Also, would there be any issues with it being a debit card rather than a full fledged credit card? ( I didn't have any problems for the last 7 years using this card until today.)

Thanks!