I'm probably wasting my time, it looks like it only accepts those three different credit cards and paypal. Can I use my debit card through paypal?

This card in particular is a temporary card given by wells fargo. It says, Instant ATM card.

Uhm... I've used credit cards before for this sort of thing but I'm kinda stupid or something this time. At the cart it asks for both the card number and the security code. I can't seem to verify either.

On the front of the card there are two sets of numbers separated by a space. I'm guessing one or both of those numbers is the card number?

There's also a sticker on the front, with a letter and four numbers. The sticker also serves as a reminder that the card expires in 21 days and such.

My brain is refusing to work. Help my poor little brain please?

Visa and Mastercard do have debit cards. In fact if you see the mentioned cards you cannot even decide that if they are credit or debit cards. Ask you bank for a Visa or Mastercard debit card. I have a Visa debit card and can use without problems anywhere the same way as it was a credit card.

Yeah, we usually call those check cards in the US. They'll have a Visa or Mastercard logo on them in addition to the typical ATM network logos.

I didn't realize that any banks in the US were still issuing non-check card debit cards. The only ones I've had in the last decade are both Union Pay cards.

As long as it has a Visa or Mastercard logo, you should be able to type in the numbers the same way that you would with a regular CC.

Unfortunately, showing us the numbers would probably be a bad idea. And the security code would be on the back of the card next to the signature typically.