The problem is "Kawasaki".
Remove that and any text that even hints at "Kawasaki" and try again.
You might get away with having "Kawasaki" in the image.
Problem is, Big K has no sense of humor and is very sensitive on how it's brand is used or protrayed.
Years ago, I tried to obtain a license to use the "Kawasaki" brand name for my own CafePress store and was eventually rejected.
The only way Kawasaki found out about my store was because I used "Kawasaki" to describe the products.
They have a ROBOT that crawls the web as well, looking for copyright and trademark violators, which this CafePress store is, in this case.
Either make it impossible for their robot to find your store, or find another shirt store.
I thought about doing the same thing to sell my cartoons with the Kawasaki brand on the images, but decided to do that at a later time.
I don't like the CafePress store model and how they do business with artists, that is why you don't see my stuff there. When I am ready to do shirts again, I will be using a different company but I will also make sure the Kawasaki robots can't find my stores to shut me down.
Try describing your store with misspelled descriptions. Problem is, it makes it more difficult for customers to find your products.
Now, if you just want a single shirt for yourself, HIDE THE STORE from prying eyes and leave out any reference to "Kawasaki", "Concours", "C14", etc.
By the way...your image looks like it could be a licensed Kawasaki image. I would not want to copy that without someone's permission.
Good luck.