If you purchased via the SimHub Shop and clicked "Copy Key to Clipboard," you copied a Base64 text string. If you pasted that into Notepad and saved it as a .txt , SimHub will not read it.
: The software boots instantly without wait timers, letting you get straight to the grid. 🔊 Feeling the Limit: Haptics and Shake simhub+license+file
SimHub has internal checks; using a leaked license can result in your software being hardware-locked or disabled. If you purchased via the SimHub Shop and
SimHub operates on a tied to your account and specific computer hardware, rather than a simple standalone "license.key" file that you can freely copy between machines. simhub+license+file