so David, you are not telling us the things that would help us make sense of this. There are only a few reasons it isn't finding a license which is the port is wrong or not open between servers, the name if the ARServer is wrong or not up, the login is wrong or doesn't have access.
So the easiest thing is to tell you what you need:
The user for demos is typically "Demo" with no password and this has FULL Admin Access; HOWEVER we typically create a Service Account for integrations like "BCMAutomation" and password of "password" to do this (you can set up any password you want) and this ID is a Fixed license.
First validate your ARServer is up and you can login with the ID above
go to the ARServer install dir find the config file for ar, it will be here
UNIX — ARSystemServerInstallDir/conf/ar.conf
Windows — ARSystemServerInstallDir\Conf\ar.cfg
Open the file and find:
Server-Connect-Name --- this will be the NAME you'll use during your BCM setup
Run the install again.