is that BLE (low energy) or BT classic? they have almost nothing in common and are 100% incompatible (idiots, but that's for another thread).
to enable at commands, you have to do some magic. you have to power up with one pin (key) set the right way and that will put you into config mode. or, I think you can press AND HOLD the key line and you should be in command mode. there is a command mode that some call 'command-lite' where you get some commands but not all.
I use the hc05 and 06 and here's how I have a pair of them hooked up for wireless serial comms:
btw, I just checked and your module is BLE so it will pair with another BLE device that supports the same protocol, but you will get better results from the hc05 and it will be more compatible with BT classic (ie, most phones still speak bt classic and only te newer ones speak ble).
ble for serial i/o is actually stupid, but again, that's for another thread.