Subscription problem.

After the expiration of the free version of the application, I forgot to cancel the subscription. There was not enough money on the card, so the subscription did not continue. I deleted the application and canceled the subscription. Now I can't update or download anything, because I have a problem with the payment system. I can't connect a card with money, because I don't want to lose 8 dollars for nothing. A subscription that has already ended and has not been paid is still in the "purchases" tab. What can I do?