Usb-Debugging...Connect to pc, go to Dev options, disable USB debugging... Pc will install correct drivers... Bam your good to go
Re: other issues... You have enabled root in Dev tools..?
Yes, device is rooted, but even if not I can't imagine that this causes the missing "Menu"-entry on the top-left in TBackup. And SwitchPro shows the correct status, but you can't change it.