To connect Tonebridge to Blueboard, do the following:
1. Get the official Blueboard app: https://itunes.apple.com/ru/app/irig-blueboard/id718233714?mt=8
2. Connect your Blueboard using the app, be sure to select the A mode (hold the “A” button when turning on the Blueboard)
3. Go to Tonebridge on the “Featured” screen, scroll down and select “External Pedal Interface”
4. Press “Set up…” in the list of actions and press a button on your Blueboard. When you press the button, it should be assigned to the selected action. That's it! Now you can use your Blueboard with Tonebridge.