You are getting an ACCESS DENIED error message because the MerchantID we have associated with your ScanPower account is being rejected by Amazon when we try to pull the item information.  You can attempt to remedy this by re-establishing the link between your ScanPower and Seller Central accounts.  To do this:

If after re-establishing the link between your ScanPower and Seller Central accounts, the error continues, please contact Seller Central and inquire as to why they are denying access to your MerchantID via their MWS API.