You can manually configure an EVI-BT or BTLE in ECU Connect (or your phones Bluetooth settings. You may need to do this if you have gotten a new EVI or had download the app and set it up without configuring an EVI-BTLE or BT.
To do this start by connecting the EVI-BTLE or BT to OBD or USB power and check that the light is slow flashing green (Vehicle Interface LED Color Status). Then from the main screen and go to the settings wheel
Select the Add/Remove option under Vehicle Interface
Select the type of EVI-BT (Low energy or normal) that you have
For EVI-BTLE follow the instructions here
For Normal EVI-BT follow the instruction prompts from the app
Which will bring you to your Bluetooth settings manager where you will have to scan for the device
Once Pairing has completed you can return to the app and use the My Car button to access ECU Connect.