I received a response from the team by e-mail, I quote: "...As we have advised everyone in numerous correspondence, we have decided not to pursue a token sale because of the crypto market crash and the extreme volatility of the exchanges.
We have offered a refund to all who invested and rewarded those who participated in the community bounty program with participating in the new equity opportunity. We have issued shares equal to the value of your participation in the cancelled token sale.
DataBlockChain LTD is still in the development phase but we are working hard and making progress in building out our technology and business model.
Currently there is no public trading market for DataBlockChain LTD shares, when an opportunity to sell shares becomes possible, we will contact you and advise on any options at that time.
We will from time to time update all shareholders on the progress of the company."
Hope that refunds will not harm the future development because if they loose main part of the investments they will not able the deliver majority from their roadmap.

i also received same response from the data blockchain team. i think that refund is already happens and only people are left that contributes in data blockchain project and received digital certificate of their holding in this company. i am new in this kind of project. team assure us that when ever buy and sell of shares possible they will let us know with proper guide so all we have is to wait