Not to worry, this one’s free
Software and gaming companies sell expensive licenses to their products. One product key gets you access on a single device – most of the time. Sometimes some issues arise, although they are few and far between.
This could be anything from the product key not working, which is again rare, to the key missing numbers. The person who posted this wanted to get two for the price of one, hence this hack which might work. I will leave this one to others to try. “Yes, my product key is not working, can you please send me another one?” “Sure thing, sir.”