I’ve been having issues too. I ordered something October 11th, shipped later that day and said it was leaving China on the 13th. Went completely silent until 28th December (!!!) where it had landed in Heathrow. That’s over two months from airport to airport which is just insane.

2019-12-28 11:57, LANGLEY HWDC, United Kingdom, Item Received

2019-10-13 22:22, Shenzhen, delivered to air transport

2019-10-13 22:22, Shenzhen, delivered to air transport

2019-10-12 18:12, Shenzhen, “Post Shenzhen International Mail Exchange Bureau” has been exported directly sealed

2019-10-12 07:14, Shenzhen, leaving the Shenzhen International Bulk Mail Processing Center, the next stop , Shenzhen International

2019-10-12 05:32, Shenzhen, “Shenzhen International Bulk Mail Processing Center” has received, agent: receiving and sending 4

2019-10-11 09:49, Logistics orders created (quick-selling platform)