Thank you, Tony - it did work again for a while, but now there seems to be a new problem. My sold items are scheduled to auto-relist as long as there is at least one in my inventory, but they have failed to relist today. All the unsold items are relisting as they should, but not the ones that have sold. I have checked the Active listings, but they are not on there. I guess I have to relist them manually.
I have filed a support case, but wanted to alert Auctiva and the community to what's going on.