If you have a license for DU Meter 6.x or earlier, and after you upgraded to DU Meter 7.0, your serial number has not been accepted, visit DU Meter 7.0 upgrade information web page for more information.
If you bought a license to TradeTrakker 2.x in 2013 or earlier, your serial number will be be accepted by TradeTrakker 3.0 and you will need to buy an upgrade licence. Please visit TradeTrakker upgrade information web page for more information.
If you have a license and registration information for TweakMASTER 1.x or 2.x, and after you upgraded to TweakMASTER 3.0 or later the software reverted to evaluation mode and your serial number is not accepted anymore, then visit TweakMASTER 3.0 upgrade information web page for help.
Please do not share your serial number with anyone as doing so may likely result in the number being deactivated.