No, it should look like the way it looks. There should not be spaces after the /.
To avoid the forum from mangling your pasted in code/logs/shell commands please How to use code fences which will preserve everything without mangling it.
Correct, because the binding is seeing /dev/ttyAMA0, which is I believe the usual place a RazBerry will show up if you don’t have any other devices plugged into the RPi.
You can only run one program at a time that uses a serial device. Are you still running ZWay or some other zwave software?