Hi @Jonathan_Greene,
So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
Is the import / scanning progressing at all or is it stuck on the numbers shown there?
Since noticing this have you tried rebooting your Core machine?