I thought that it would be faster to reach Woot staff through forum. So here is the issue. I saw that halftones in one of my designs kinda look like messed up: https://shirt.woot.com/offers/penguin-guide-to-formality?ref=cnt_ctlg_dgn_2.
The halftones are represented not by small dots as in the file I sent, but with big squares. I don't know if the design is also printed in such way or maybe it just looks so in the preview, but still it looks really not good.
Can you please check this?

Also wanted to mention that there is no sales stats page for these designs. So it's also some technical problem.