You receive this message due to (in this case )you are trying to open The Alchemex Administrator when your machine is only licensed to run as an Alchemex Report Manager
You need to delete your current license from the license manager if you want to assign a different license to your workstation.
Please see article Removing a Workstation License
NB: Note that deleting a License invalidates your serialization key and Alchemex will need to be re-serialized online before anyone will be able to access Alchemex again.
Please see article Serialization