Have you used any other scanners or reader/writers on it yet? Any possibility it was modified by something beforehand?
The CC is a page of OTP bytes that can only be flipped from 0 to 1, but not back again.. so the 6D is 0110 1101 in binary, and 6F is 0110 1111.. so something flipped that one bit, and it's not able to be recovered.
The 6D byte in the CC is a size indicator. It tells NFC readers the amount of memory available for NDEF data. It's values are laid out on page 16 of the NTAG specifications, but I'll post it here for easy reference;
Are you sure this is an xNT chip? From the support scan, it doesn't appear to be. The order checks out, and we did ship you an xNT, but the scan data does not appear correct for the xNT.