Infos about of Mighty Desktop as a whole, for example getting a premium license or sending feedback:
"Premium license" means that all features are unlocked. After the first installation you get one month Premium for free, so you can fully test Mighty Desktop. After that, it switches back to Basic, where quite a few functions continue to work with reduced performance and functions programmed with a lot of effort are completely disabled.
Premium licenses can be purchased for single computers as well as for whole domains. Premium directly in the store, for a domain license the parameters can be determined with in this dialog: