At any time of funding process, every member has right to vote for a Refund. 

The voting right depends on member’s equity, the bigger the equity is, the stronger his vote. 

If 51% or more of votes choose a Refund, all funded amounts would be automatically refunded into each member’s wallet, corresponding to their equity ratio. 

Some parts cannot be refunded. 

Each account has the right to vote for a Refund only once.

So if you individually would like to recall the funding, it is unavailable. 

As the main feature of Smart Contract and Blockchain technology is that no one can control the platform even HopeBook system's developers.