I'm sorry but following the current industry standards, UMi provides updates via FOTA method in the future, that makes it impossible to use Rootjoy at the same time. The Rootjoy project has been discontinued. You still can use the phone management functions of that app.
RootJoy seems to be a pretty good app, so why did you stop the development project ? Especially with the UMI Super that needs good resources to control it.
The possibility of Rootjoy was one of the reasons to switch to UMI super... Please keep at least the non-bloated original Android (+ update to 7) and leave the root possibility, then I can live with it...