I'm trying to set up an OS X 10.12 Sierra guest VM in order to use some software that isn't compatible with Mojave. Unfortunately, I cannot seem to get FaceTime on the guest VM to connect with my iPhone and make a call like it can on my MBP. I was able to get the VM to recognize the phone by switching it's network connect to bridge mode, but every call attempt fails. Am I missing something? Please advise.