@Boseac3 Hello, 

Thank for your feedback,  for the purple image, you could try some suggestion here: 

1. Manually switch between day/  night vision mode

2. Reboot the camera from Kasa APP or by powering it off then on manually;

3. Shake the camera 

If the above troubleshooting steps are not working, sorry to tell you the camera should be defective , you could contact the local retailer and or local support to check warranty and with the forum information , hope this could help~