Systematic problem with F-secure booster activation key



I have a systematic problem with my activation key for F-secure booster premium. The last digit of the fourth set of exactly correct activation key registers as a blank space keystroke. I have tested and for the fourth five digit set last keystrokes D, H, M, O and Q register as blank strokes. This apparently leads to program informing that otherwise correct activation key is incorrect and booster premium does not activate.  I have de-installed and re-installed booster many times and the activation key problem stays the same.  It is an  annoyance


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