Hi..
I told you to share screen shots so that issue can be easily resolved...
However check the steps..
1. Whether revaluation at actual price is executed MFN1
2. WIP is required only if order is not DLV status ..if DLV then no need to calculate WIP
3. If order status is TECO/DLV then only you can calculate variance & settle..so check status
If you complete the above process , settlement will make your order zero