1. Launch the ‘ekey uno app’.
  2. Tap on the “Device” symbol at the bottom.
  3. Tap on “Connection”.
  4. Tap on “COUPLE DOOR LOCK ACTUATOR”.
  5. Follow the instructions.
Android:
iOS:
The user manual for the ‘eqiva BLUETOOTH® Smart Lock’ can be found here(pdf).
You can find support for connection issues with the ‘Nuki Smart Lock’ here.