@htfb 

I misunderstood the same thing as you a while ago :-) , but there are no settings but controller settings section for controllers. 
exactly as site settings are grayed out.

if you are going to take a backup of the controller, this must be done locally, not via the tp-link cloud.

  @MR.S  Thanks for your update response. Due to the software controller upgrade, I need uninstall  the current controller , if I cannot backup the configuration , how can I restore my configuration because my controller already has 50 devices adopted. 

Thanks,

Htfb

MR.S wrote

  @htfb 

 

I misunderstood the same thing as you a while ago :-) , but there are no settings but controller settings section for controllers. 
exactly as site settings are grayed out.

 

if you are going to take a backup of the controller, this must be done locally, not via the tp-link cloud.

 

  @htfb 

you don't need to uninstall, you can just upgrade. but to take a backup you must log on to the controller locally.