Add warning

docs/installing-macos.md

@@ -23,6 +23,9 @@ After it reboots, you must continually select the "macOS Installer" entry in Ope
 
 Once you get to the setup screen, you will probably notice that it is very laggy, this is ok, as it will get much faster once you get through it. A reboot is always reccomended after you are done installing.
 
+### DO NOT LOG IN TO YOUR APPLE ID ON THE SETUP SCREEN
+This will blacklist your account and you will need to contact support. Before logging into any apple account you MUST follow [this guide](/docs/guide-Apple-ID)
+
 ## [Now head over to Finishing Up to see how to set up the VM to be faster and have more features like sound and display acceleration](/docs/finishing-up)
 
 (Don't skip this)