I contacted them, and asked for bunch of technical questions and helps multiple times.
They did have good response so far than other companies that I have ever contacted.
As a senior forum user here, I can fully understand that lots of users will just complain and even insult the company badly if they received any problems.
But, for users who want to solve and research the software problem, or get any help, the complaint or insulting will not help anything, but push the situation awful and full of tension.
It's good to hear different and positive voice here