Hello MoWo,
If in Activate Product dialog you have only an option to deactivate the license - then you have a node-locked license activated. In case of floating license - the text will say exactly that Metashape is using a floating license and if you are connected to the license server you will have a possibility to Borrow the license or Return it, if the license has been borrowed before.
So in order to transfer the license to another machine you need to deactivate it on the current computer first and then re-use your license key for activation on the second machine.
Unless you are performing multiple activation/deactivation operations per minute, you are fine. Otherwise the activation server may consider such activity as a suspicious and could temporary block incoming IP address.