Google no longer offers the Jabbla BT app from the Google store. However, you can download the Jabbla BT app here (using Android: long press and choose ‘Download link’).
Download the file directly on your Android v4.2 or higher smartphone. Click on the file to install it and you will be notified that this is a third party app. This is normal as it is a direct download and not an app from the Google store. Please click ‘ok’ and follow the instructions on your mobile phone.