If you've ever tried to add money to Cash App only to find that it won't work, there are a few possible reasons for the failure. Your account might expire, you have an outdated mobile device, or your connection is weak. Here are a few things you can do to fix the problem. This article will walk you through some of the most common reasons you can't add money to the Cash App. Insufficient funds: This means the card does not have enough money to cover the payment. Your balance may be negative, or you may have used it to cover the payment. In this case, you can transfer the money to your debit card or bank account. The app may have been updated since you last used it. If it was, it's unlikely that it will work with your older version. However, updating it may fix some glitches. Cash App card: Another reason why adding money through the Cash App transfer failed is that the card used to fund the account doesn't have enough funds. If your card is linked to your bank a...