Dahua stuck when switching from day and night and vice versa

[Gigabyte2]

Hello, I have a Dahua starlight camera that sends snapshot every 2 minutes to an FTP server.
Camera is set always in Day mode because I want to have coloured pictures during the night.
When the camera switching the exposure to "night" it stops to send snapshots to FTP. If I reboot it during the night then it stucks when the exposure back to day..
How can I fix this?

 

[Gigabyte2]

UPDATE

If I set exposure to auto and the upload doesn't stuck.
I think there is a bug when the exposure is set to manual!