The unfunded amount is the difference between the Protect Fee owned by a Borrower and the amount funded by Lenders. The Borrower Payment Protect Fee gets capitalised into the loan amount but is not a cash distribution to the Borrower, therefore does not require to be funded by lenders. Lenders only fund the lender fee component that is paid to Harmoney at settlement.
Take for example a loan that includes $1,000 borrower Payment Protect Fee, of which the lender fees are $350. The $1,000 gets capitalised into the loan amount but the Lender only funds the $350 of fees paid to Harmoney leaving $650 as unfunded but repayable over the life of the loan.