027-529 - No SMB read permissions, so the user/pass is valid for the connection, but can't read what is in the specified folder. You need to elevate the user privileges on that PC
027-589 - SMB protocol error, user account locked out. You failed multiple scans and the PC locked the account, reboot the PC.
018-722 - Error connecting to Google server related to Google Cloud Print, not scans. (Time/date/DNS is wrong)
So by the look of the errors, add the user account to the actual share, and then, use the specific formatting Windows provides within the brackets as seen below when you add the info to the printer.
