Dahua 4208 logs out

[Bazzle]

Gooday. One system I have put in uses an Dahua 4208.
Recently it started logging it self out after about 10mins requiring re logging in constantly.
I have checked what settings I can but have not found anything yet.
Works ok otherwise.
Any clues?

 

[Bazzle]

Ha, found the auto logoff was set to 10 and not 0.
No idea how that changed?