The bird box camera can be password protected if you want. This is NOT the password you established for the iCSee. The camera doesn’t have a password while you receive it. The app will instruct you to add the new password to the camera when you try to connect the camera to your home WiFi for the first time. If you just forget the camera’s password, you will have to restore the factory setting for the camera. You also can manually add or change the password you saved to the camera.
1. First, go to iCSee, and tap the camera to view the live video, then tap the settings icon on the top right screen.

2. Next choose “Password Management”.

3. Now Input the current password and new password.

4. Next tap “Save” to confirm.
NOTE: You were changing the password for camera, not iCSee app.
Related Sources
How to reset bird box camera’s password(Windows)
How to reset WiFi bird box camera