Are you entering the pass key (hex) or pass phrase (ASCII)?
Possibly Case-sensitive? Unlikely, but worth checking.
Also, check what key length the device is expecting - 64 or 128 bit
- If your product vendor requests 40-bit keys, use a 64-bit key (10 digits).
- If your product vendor requests 104-bit keys, use a 128-bit key (26 digits).
SD