Trouble paying for characters with paypal?

Not sure is this is the right place to post this, but I need help:

I downloaded killer instinct for win 10, and was hoping to pay for a character bundle.
I have $30 on my paypal account. However, the card attached to my paypal has expired. Because of this, I cannot use or even access the funds that are there.
Is there anyway to tell paypal to use the funds that are already there, instead of linking to a bank or card?

Try going into the pre-approved payments and check the available funding sources. You may need to uncheck the expired credit card.