Why doesn't this program do what I want it to do?

This is my billing program. I have to use this! Bit defender doesn't allow it! My IT guy can't even set it up to let me use it! What to do? I think that if I tell a virus writer that I want to use this program, then I have to take him at his word! I bought it, for a lot of money, he has to do what I tell him!

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