Hi,
A license can only be stored on one USB-eLicenser (Dongle).
It is not possible to activate the same license on a second USB-eLicenser.
Incase you have lost your USB-eLicenser or the USB-eLicenser is defective and doesn’t show up within the eLicenser Control Center anymore, please use Steinberg Zero Downtime like already mentioned.
Incase the old USB-eLicenser is still working and you just want to replace it because its a pretty old one and starts to fall apart, you can simply move the licenses yourself from one to another USB-eLicenser:
Cheers,
Jochen