We've had an intermittent issue with Zazzle links returning a page saying 'No search results' instead of tshirts with the design on them. We are talking with Zazzle and currently they don't have a timeline for fixing this. We will contact them on Monday (12/1) to get a better estimate once their engineers can take a look at it.
From an update from Zazzle, if we change all the products to public, this should fix the issue. I'm assigning this bug to Tara as she is the maintainer of our Zazzle store.
Closing, Tara changed the products to public.
I've been testing this off and on tonight, and all looks good; still want to keep testing tomorrow to be sure, though.
I'm calling this good (fixed on Zazzle's end); will continue testing, of course, but I think we're fine now. Verified FIXED.