I am seeing the investors of hashcard ICO are much worried and right now they are passing over a worst timing as they are confirmed that the ICO in which they invested is scam. That is bad for the investors.

If the team is saying that they are sure that they will complete their promise then they have to show the proof as soon as possible so that the investors are satisfied, while if it will take time then it is not good to give a hash time to the investors. If the team is sincere and legit then they have to return the money of the investors and, after confirming that they can do what they promise, they have to start their ICO again.