Hello,
Sorry to hear you are having issues. Please try these steps on all related systems, uninstall Multiplicity, reboot immediately (important), download latest version available in your account product download page: https://store.stardock.com/myaccount/products. Install it, reboot immediately again. Retest it and report back.
If the issue still appear, please report back with more information.
- Windows 10 or 11? Need its full version and OS Build number on all systems. Please use winver.exe.
- Multiplicity version installed. Make sure both or all related systems are running the same Multiplicity version.
Thank you,
Basj,
Stardock Community Assistant.