If you have been viewed the nest box camera with your existed mobile phone, and want to connect the new mobile device to that camera. You can find the bird box camera’s QR code to add the camera. The app will ask for the password of the bird box camera. That is not the password your established for iCSee or XMEYE account. The camera may have instructed you to add the new password while you activate the camera. If you don’t recall the camera’s password, you should restore the camera’s factory setting. The default password is empty for the nest box camera.
Instructions
This below instruction is suitable for the IP (WiFi) birdhouse camera from Green-Backyard, Gardenature, Oertl, Green-feathers, and Handykam which are using iCSee or XMEYE mobile application. If you prefer XMEYE, please skip to the second section below. Both iCSee and XMEYE are Interchangeable.
iCSee (Pro)
1. First, go to iCSee app, and tap icon “ + ” on the top-right screen.

2. Now tap “More” on the top-right screen. The hidden options will appear.

3. Next, choose “Add Shared Device”.

4. In the new screen, tap the QR code icon to scan the camera’s QR code.

5. Now, key in the camera’s password if required. The camera name should appear in the device list.
6. Finally, tap the camera, you will start watching the live video.
XMEYE
1. First, go to iCSee app, and tap icon “ + ” on the top-right screen.
2. In the new screen, tap the QR code icon to scan the camera’s QR code.
3. Now, key in the camera’s password if required. The camera name should appear in the device list.
4. Finally, tap the camera, you will start watching the live video.
Related Source
How to connect IP bird box camera to mobile phone or tablet( iOS & Android )
How to install PC software to watch birdhouse camera(Windows)
How to install CCTV video software in Mac OS (Beta)(Mac)