Thank you for your reply.
I asked sale structure including past sales, and MVP on telegram that was a reasonable question as a contributor because it was not mentioned at all on website and WP(even though it was strange ICO).
I waited for their answer one night, and today their answer was to "ban me".

I have to put up
RED FLAGI worry about my subscribers of telegram, potential investors.
This is a big red flag. I had some questions about this project and it does not look good from this response. They should not have banned you.