When you set up the account did you enter a starting balance owed, or did you make that entry after the account was created
Typically you create the loan account, then you deposit the amount borrowed and use that loan account as the source account for the deposit. Then you spend the amount deposited.
Then payments lower that balance in the loan account
If the payments you are making are in the decrease column, the total will increase if there is no loan amount entered to start with. Though on a balance sheet the loan amount will show as a negative since you are making payments but there is no amount you owe.