I found your auctions by searching for your titles
I too have had this problem and also called. Spoke to one of their minions who also noted this issue. I was supposed to hear back but you know how that goes. This is an issue with whomever writes their programs and unfortunately we sellers can have no contact with them.
I have found that the problem is connected to category. You put the item in the appropriate category and when I check with key words the item is not there. So you have to waste time and experiment with different categories to find where it will show up. Another example of this problem shows up when you are trying to list a native american piece. You put in all the required info and the dreaded "oops" comes up. Finally you have to morph the title so noone ever sees it.
This is so frustrating I'm wasting time just to lose sales. Any eBay is loing too.
Any ideas as to how to get some resolution to this? I'm all ears.