This is a know issue that has been reported by many of our users. Note that this is not an issue with Quantiloop but with the Blueboard. This occurs in every other app (like Garageband) as well.
Please contact IKMultimedia for a possible resolution.
However we have found there is a workaround to this issue. To resolve the connection issue (re-)upgrade the Blueboard to the latest firmware (even if it is already on the correct latest firmware). After a successful upgrade the Blueboard should work again.
For details on upgrading the firmware please contact IKMultimedia.