Why is the express delivery speed in Yin Yan so slow?

The reasons for the slow order quantity of this company are as follows:

1. The courier company did not enter the waybill information: in this case, the courier company may not enter the express waybill information into the system, so the waybill information cannot be found.

2. Incorrect entry of express delivery number: If the express delivery number is entered incorrectly when querying, the system cannot match the correct waybill information, so the relevant information cannot be queried.

3. Internal system failure of the courier company: The internal system of the courier company may fail, resulting in the waybill information not being updated in time or the related information not being queried.