http://track-chinapost.com/result_china.php?order_no=RP744252320CN shows the parcel was sent to airline on Oct 15.
This kind of register airmail is kind of slow and China Post will lost control of the parcel after sent to airline. so there will be no update anymore after sent to airline date. So you can not know exact location at this moment. Once parcel arrives Ukraine, Ukraine Post website will show its local location and delivery status.

Parcel from China to Ukraine normally will take about 4 to 8 weeks. You need wait some more time.

If your buyer protection is expiring, you need ask seller extend protection or open dispute for refund.