Because this part of the balance is still waiting for settlement.
After you complete the service and invalidate the service code, the funds will enter the settlement state. The platform needs to follow the settlement cycle of the payment institution (including card issuance bank and clearance institution like Visa/MasterCard) for reconciliation. The platform will transfer the fund to you as soon as we receive the fund from the payment institution.
Generally speaking, for service products, the time you receive the service fee is about 7 days after you complete the service and scan the service code.