It seems earlier one of the investors also returned their funds and they did not refuse him, this is rare because I know of cases where startups do not return money or often not all money, this is always a risk.
As I understand Optherium do not hurry with the listing of the tokens, they are waiting for a good market conditions that price of the tokens would grow. Those people who do not want to wait can return their money back.
Now many project do not hurry with the listing of their tokens because the market conditions are not good and the price of the tokens will fall.