Tried it with mine, and BT isn't working with mine either.
Apparently the "Host" box under Bluetooth Pairing should be filled in if it's properly recognizing your BT adapter... it wasn't with mine either (was blank like yours) and couldn't get it to pair wirelessly. Seems to be an adapter issue, or it's not properly using the MIJ driver for the adapter apparently.
This post has instructions on how it should pair:
Support | Better DS3
Here explains the blank host box issue:
Support | Better DS3
A possible solution:
Support | Better DS3