Although I appreciate the effort that went into developing Blockly Maze, I am unclear as to why it was developed, rather than suggesting that Scratch be used to

Although I appreciate the effort that went into developing Blockly Maze, I am unclear as to why it was developed, rather than suggesting that Scratch be used to teach elementary school children in Vietnam. The Scratch development environment is available in 44 different languages, including Vietnamese. It is free to download from the MIT website. It's a fantastic tool for teaching programming concepts to children. Both of my children, ages 5 and 9, have been busily creating their own games and animation using this tool. Are there restrictions that would prevent the export of Scratch to Vietnam?