1. I don't see anything wrong with the tracking. there might be 2 possibilities, one of those being that all last week China was on a National Holiday and mail service was disrupted. The other one being your country Post and Customs Office having to much work to do.

2. Your parcel has been on the road for 34 days, the estimate arrival time for your country is from 11 to 28 days. I would give your parcel a chance until the 17 Oct for at least Italy Post scanning your parcel for arrival.

3. You could also contact seller and tell him you have not receive your parcel and give him this tracking:
China Post Register Air Mail Tracking System
Parcel No.RS213357984CN tracking result
2016-09-08 20:04:52.0 Dongguan Post Office 跨境电商international parcel center received
2016-09-08 20:12:01.0 Dongguan Post Office 跨境电商international parcel center customs scan
2016-09-08 20:12:32.0 leaving Dongguan Post Office 跨境电商international parcel center ，next station Dongguan center
2016-09-09 13:03:35.0 Guangzhou Transit Station export security scan
2016-09-09 17:02:50.0 Guangzhou Transit Station export customs cleared
2016-09-15 14:12:00.0 arrive Guangzhou Airport
2016-09-15 14:13:33.0 leaving Guangzhou Airport going to next airport/seaport

Hope this help.