You can try a few different methods to solve the problem if your Bluetooth device isn't connecting to your Formuler. To begin with, confirm that your Bluetooth device and Formuler are in one another's range. If so, attempt restarting the Bluetooth device as well as the Formuler. In case that doesn't work, try erasing the pairing between the two devices and then re-pairing them. If you're still having issues, you can also get more help by contacting Formuler support.