HMP - I get the error message maximum number of activations. What should I do? Technician November 17, 2021 13:00 Updated Please contact our support with your product key at firstname.lastname@example.org. Related articles HMPA - I get the error message maximum number of activations. What should I do? HMP - I have lost my product key. How can I retrieve it? HMP - How do I activate HitmanPro? HMP - Still need help? HMP - I get "error message 20" when I try to activate. What should I do? Comments 0 comments Article is closed for comments.