Change the name server mobile app for android

Hi, I change the name server in the mobile app for android. When I do it i can’t access anymore to the settings of the device. Everytime i tried to do it the app close itself.

Sorry, It was a mistake of mine. I wrote bad my server name. Every . it write a space blank. But anyway it have to be fixed cuz if the user write a bad server name couldn’t access to the device to be deleted. I had to uninstall the app, install again, add the token to try again.

Switch control are not available in the app.