Currently, China is celebrating the holiday Lunar New Year. makeblock is a Chinese company, so they take a vacation accordingly. Since Lunar New Year will continue until January 30, you cannot ask the makeblock staff(@tech_support, @bigeyex etc) until then. It seems they forgot to tell it, so I will tell this instead.
Happy Lunar New Year!
[Please read this topic as much as possible!]It is currently not possible to ask the makeblock staff
Happy Lunar New Year to everyone and may the tech support people have a safe holiday.
Thank you dai5_jp for the information and as said by dr-roboto: Happy new year