Connecting Paltronics Voyager Pro+ headset to iPad 2 with Cisco Webex app

Hi I am using bluethooth headset Voyager Pro+ from Platronics .

I when trying to use the Cisco webex application, I can't get any sound to the ear piece or use the microphone.

But when I type or use the iPad I can hear the "clicks"

The bluetooth is paired with the iPad correctly

The same headset works with iPhone