Hacking your program?
Man, you're brilliant
Because his English proficiency is not so high, I don't think that he meant hacking his own program.
Instead, by his own software he meant software that he purchased, however he lost his key or whatever.
Dear author,
You can enter in contact with the organisation where you purchased your software and explain your issues.
With a simple proof of purchase I am sure they can give you access to the full version of the software.