BLE terminal with RedBear BLE shield

I connect the RedBear BLE shieldto Arduino UNO and load the SimpleChar program. I try to communicate via a terminal to the board receive and send text.
I load the Blue Arduino App on Google Play.
I active the boards.
I first use a BLE scenner and found my BLE with the name I give it and it manage to connect to.Then I disconnect from it.
But when I active the Blue Arduino and push the scen button I didn't see my device at all.

  1. Waht could be the reason?
  2. Is there a better app when it can connect to the RedBead shield and active like a monitor?
    Regards
    Bar.