The specifics of the licensing subsystem are that one License Manager can control only one AQTime license key at a time. This means that if you have two licenses, you cannot activate both of them on the same License Manager - you will have to use two different PCs. If you activate a license on a computer that already has another active license, the new license key will replace the activation data of the existing license.
This applies to both Floating User licenses and Node-Locked licenses. For detailed information on this and on possible workarounds, see Using Multiple Licenses on One License Manager PC.
You can also try resolving the problem by using the Licensing Troubleshooter on our web site: