Hello, I get an error message that item is invalid. This message appears for any item number input. Is there a known issue with the app? Thank you. Igor

Hello Igor,
Thank you for your question about the "Incorrect Item Number" error. Are you entering the item number without additional characters? Sometimes cutting-and-pasting results in extra characters such as spaces (although our software should remove them).
Please let us know if this did not resolve your issue to your satisfaction, and we can take the next step. We are happy to help.