Hi- not sure if I can help, but when you look on the notifications on auctiva little boxes at top, does it not say WHY they did not go through? IF so, if you tell me, I will at least see if I can interpret what it means. Believe me, I have had more than my share of them.
You may want to write support also just in case I can't help you will at least have a jump on things.
Vickie
http://stores.ebay.com/VICKIES-VARIETY