Windows 10 nightmare won't connect to Jefa Tech Repeater

Windows 10 has issues with connecting devices, my wife accidentally hit the upgrade 10 button on her computer and it disconnected our fax/scan machines we use to scan and send invoices for our business, so we had to call our tech guy in to get them to work with the computer, the windows 10 is difficult to connect with devices if you don't understand how it works like myself..