Your credit card envelope may show a negative balance when you make a payment toward the credit card that was greater than the amount of funding you had in that envelope. This situation is most common when you first set up your credit card in the app and make a payment toward the credit card.
To balance it out, create a "One Time" fund in the credit card’s envelope equal to the credit card’s negative balance.
For example: If your "Wells Fargo Credit Card" has a negative balance of $580, fund that envelope with $580 to balance it to $0.
Please note: You may have to do this more than once, until the FaithFi app includes all the transactions on your monthly credit card billing.