However, I think Author are very dishonest, The reason is "There is a charge($1) to read the Troubleshooting(post/60701722)", and "$7.5 backers won't be able to play after updating the game".
This isn't true. $7.5 backers can still play the game. It's a one-off payment for full access for everyone regardless of the price they paid to get the game. Where are you getting those quotes from? We will make the troubleshooting post free. That's an oversight on our part.