Your registration key not working is probably because you have details for a previous version of NXPowerLite and are trying to use it to unlock the latest version. Am I using the correct version of NXPowerLite Desktop?
If your key is for an earlier version, NXPowerLite versions 8 & 7 are available for existing customers to download from this support article.
Alternatively, you can upgrade to the latest version at 50% of the price of a full license in our online store.
Any customers who have current Upgrade Assurance cover should have received the latest key free of charge. If you haven't received it yet, please contact us for your new registration key.