If activation fails a message will appear explaining the reason:
Invalid Activation IDCheck your spelling, we recommend that you copy and paste the activation code to avoid mistyping it.
However if you do manually type it in please make sure you dont mistake letters for numbers i.e. O/0, S/5, I,1
Invalid Email AddressCheck your spelling, make sure you use the correct email address you used when ordering as this may not be your paypal email
ID for Wrong SimulatorMake sure that you use the correct Activation ID for the correct simulator.
If you try to use the Activation ID for the 2382 to activate the 2377 it wont activate, use the 2382 Activation ID for the 2382 simulator
Different PCThe Activation ID is assigned to 1 PC only, if you try to activate the simulator on a 2nd PC it will fail.
You can purchase a discounted additional license if you wish to install the simulator on a 2nd PC: Buy License