Cant use my Multiplicity now because i reinstalled my windows and it come up with Unable to activate Multiplicity. This Stem account has exeeded the number of allowed activations. Please contact support and inlude your StemID 76561197970800978
Sorry to hear you are having issues.
Try this link please https://forums.stardock.com/486311/accounts-and-activation-support-faq#deactivateproduct
AzDudeStardock Community Assistant
There are many great features available to you once you register, including:
Sign in or Create Account