I already have WinSweeper on one laptop and want to apply it to another laptop as well - how can I do this?
Did you try following these steps on the laptop where you don't have WinSweeper yet?
https://support.solvusoft.com/entries/20958968-how-to-register-winsweeper
Anyway, the EULA of WinSweeper clearly states that "During the Service Period, You may: (a) use one copy of the Software on a single computer" - https://support.solvusoft.com/entries/20995057-winsweeper-eula