please send better and more clearly messages
as in case #26559337 figured out the company portal sends error messages which points in a wrong direction.
i.e while first start we got the message to startup the setup procedure but on first step is an error "your device is already connected to your company". in real that means, "your device is registered but not fully synchronized on the cloud ... please wait"
at next you will get "this device is already managed by another company" which means in real "please wait for updating intune cloud"