Unable to issue any AT commands to BT BLE Breakout Board
I found out that there is no need for a voltage divider to reduce the voltage being given to RX pin of BLE from FTDI's TX since both FTDI232RL and HM-10 are 3.3V devices (from here)

I connected the TX from FTDI directly to the RX of BLE using female to female jumpers.

Used No Line Ending and 9600 as the baud rate.

Then it worked fine, I got an OK acknowledge for my AT command.