Good day! please check why I keep on getting an error message saying " Item number appears to be incorrect" this error message keeps on coming in eveytime I want to bid an item. Tried it to different item and just keeps on getting the same error message

Hello Ray,
Thank you for your question about the "incorrect item number" error. Based on what you said, your authorization expired or was revoked. You just need to go to BidSlammer Preferences and click the auth link.
We hope we have resolved this to your satisfaction. Please advise if we can help with anything else.