In the event of this happening, there are a few possible reasons which can cause the error of "交易或代付状态不正确" on Taobao,
1)The merchant on Taobao is out of stock
2)The merchant does not allow 代付 as a payment method
3)One of the merchant has changed the price of the item while you are requesting for 代付.
One of the above-mentioned reasons might apply to your Taobao order.
Cancel your current order that currently have this issue and reorder the items again.