Everytime I try to add a eBay item, it says the item number is invalid....I have tried on a number of different items and each time when I complete the entry and hit the 'add snipe' buttom, it says the item number is invalid...very frustrating

Hello Al,
Thank you for your question about the "Invalid Item Number" message. We jumped on this issue as soon as you wrote and resolved it. Please let us know if you see it again.
Please let us know if you have any other questions, or require other assistance. We are happy to help.