Tell your investors/angels asap. Sell what's left and return money to them first. Reuse/recycle what you have. Don't just throw the code or the team away. Move

Tell your investors/angels asap. Sell what's left and return money to them first. Reuse/recycle what you have. Don't just throw the code or the team away. Move on. Remember that failure is the default setting for learning. Learn and try again with something else. Never give up!