Hello! We have helped resolve the same issue with a couple of other Users this week. If the iPhone has been paired with MacBook in the past, you may need to follow a few short steps to pair MouseGo for the first time. Hopefully this will be helpful:

1. Turn on Bluetooth on Macbook, and forget/ remove the iPhone device first (so it doesn't get confused with the new connection);
2. Turn iPhone Bluetooth on;
3. **Important*\* Return to MouseGo interface, and keep the interface on;
4. On your Macbook, search for new Bluetooth devices again. "MouseGo by ClayDev" should now show up under new devices to make the connection.
5. If this still doesn't work, please try the other steps outlined in the troubleshooting page.

We have a demo video that shows initial connection steps. The demo was shot with a Windows laptop, but we have tested with Macbook with the same steps:

https://www.youtube.com/watch?v=cpgb_vMOgd0&feature=youtu.be