New trouble connecting harman/kardon onyx studio to ipad2

My iPad 2 has worked flawlessly with my Harman/Kardon HK Onyx Studio, up until about a week ago. I have OS 9.3.2 on my iPad. When bluetooth is turned on, it searches and eventually finds the Onyx Studio, but then it quickly disappears. I bought the Onyx Studio specifically for this purpose about a year ago and as I said, it has been working wonderfully until now. My iPhone 6 works fine with the Onyx Studio. I don't know when my iPad went to OS 9.3.2. I have tried all the internet tips of turning blue tooth on/off as well as other things. Can you help?