CardExchange license can ONLY be applied and activated to a single piece of hardware at a
time.Each license has 4 reactivations. meaning you can reactivate or transfer your license to another computer 4 times.
Licensed CardExchange becomes Demo version happen due to following reasons:

1. Your license has been transferred to a different hardware/computer.
Since our license is one is to one basis. Once transferred, The previous computer with CardExchange software loses it's license and is transferred to the other computer.
If you need 2 Hardware/Computer with CardExchange. You need 2 CardExchange licenses.

2. Changing of Network port
CardExchange uses Machine-ID to identify a certain Hardware/Computer uniquely.
Machine-ID is generated through Mac address of Network ports, Hard Disk Drives (HDD) and USB Dongle.
By default, Machine-ID is based on Mac address of Network ports.
Most
modern computers have 2 network ports so its possible the license is bouncing
between two network ports on the same machine.

3. Reformat of Computer OS
To prevent using your 4 reactivations. You can back up your iserv file before reformat.
C:\Users\Public\Documents\CardExchange\License
This is where your license is stored.
After format, Install CardExchange software and paste your iserv file to the same path above.