Likely cause: Corrupted flexi.lic file. Solution: Uninstall, run a registry cleaner (like CCleaner), then reinstall.
For hardware-specific setup help (like cutter communication), visit the USCutter Forum Do you have the physical USB dongle for your version, or are you trying to activate a subscription-based Activating your License and Downloading Flexi Flexisign Pro 10 Password
In version 10 and older, a password might be required if you are using protected FSFonts . You can manage these under the Font tab in Preferences. Likely cause: Corrupted flexi