My tracking nr is CX907100714CN

My parcel LK350416772CN was tracking fine until it reached Malaszewicz, Poland on 30/7/2024. No more movement since, can you tell me why or what I can do to get it moving again.

Good day.
I am writing to you because I need help in identifying the supplier of a parcel that has not reached me.
A parcel was sent to Poland via China Post on 21/08/2024. the shipment number is:
Number: AM504421413CN
Package status: Delivered (22 Days) Country: China -> Poland
2024-09-12 09:22 Delivered【Polanica-Zdrój】,已妥投
Unfortunately, the parcel did not reach me at my address Polanica-Zdrój postal code 57-320, al. Zwycięzców 6F/21.
I see that the post tracking records that the parcel has been delivered.
I checked Poland Post, Dhl, and other providers for tracking but I cannot find this parcel anywhere.
I kindly ask for help and information who is the supplier in Poland - what company and to whom the parcel was handed over for delivery to me. In this way I will be able to contact the Polish parcel delivery operator and maybe I will be able to find it. It is a big parcel that it is surprising the parcel disappeared.
I kindly ask for help in identifying the supplier.
The best regards
Renata Urbańska