To share the device do the following:
1. Click the device you want to share
2. Click "Settings"
3. Click "Share this A/C"
4. Select the medium to share the device (whatsapp, email, messenger, etc.)
5. The recipient should install Sensibo, close the app (from the backgroud as well) and then click the shared link. The Sensibo device will be shared and will appear on their Sensibo app as well.