Hello, does anyone knows how to hack gametwist? (gametwist.com)

It's online game, I know but I am sure that it is possible to hack it. Guys from this site got it: https://www.letstwist.info

They gave me free coins 1,000,000,000 one time but then they wanted to sell another Twists and said they can't share a hack because gametwist will block it.

Here you can see how this hack works, maybe someone knows how to hack gametwist like them?