n-Track Studio upgrade to v6.x codes error

Trying to reinstall n-Track but can’t register with supplied codes:

Product: n-Track Studio 6.x Upgrade
Price: 34.00 USD
Registration codes: xxxxx
Date: Mon, 07 Jun 2010

Product: Resend codes v6
Price: 0.00 USD
Registration codes: Registration codes for version 6.x: xxxx
Date: Mon, 30 Jul 2012

Please contact us at support@ntrack.com and we’ll assist you in reinstalling n-Track.
Also make sure you don’t post your personal registration codes in a public forum.

Flavio.