It sometimes takes some days to receive the tracking number. If you got the confirmation its shipped, go to your bitmain user panel and click on details. There you can find the Tracking number too
There is no such headline Details? Where is the tracking number exactly?
Should it be in the view order page?
Yes it should be there. But they'll email you too with it. To have tracking number, order status should change to "shipped" from "Shipping"