Excuse my mouth but don't you think this is another scam?
If any investor can test it to try to ask for the refund and actually get it then I guess I can say its safe to say they aren't scam but to see something like this and team fades away with a lame excuse can be something. Did they give an information when they'd provide a github for users to see how they are doing?
Hi there!
Actually, every investor who has requested his money back got it plus all commissions
Sometimes unfortunately it takes longer than we expected du to tech things, but you cannot call the project a scam if founders return money in full.