Cannot activate - too many activations

Hi, TWO or THREE weeks ago i tried to reactivate draftsight windows when i try to activate draftsight it says: "Activation transaction failed: Activation count exceeded. Deactivate a license from another computer and retry. Visit My.SolidWorks for more information. (3/0)",

I've sent severall support requests but nothing yet.

PS i have uninstalled and reinstalled but just get this repeat message.

Need to deactivate somehow....any one any ideas ?.