The deadline was Oct 22nd so you missed the deadline by 3 weeks, your OR should have never given you the indication you would make this board.
The board members can't hold a board until NRC sends them the file with all the applicants at the board, once NRC sends it the board can hold it whenever they want.
OR's know that board dates are just estimates, and if an OR doesn't then that OR needs to be educated. The only date that should matter to an OR is the due date, if the application is fully complete by the due date then it should be at board, if it isn't than it should not be at the next board.