While I work from home, my ScanSnap is not wirelessly connected to my computer.

ScanSnap may not be connected via Wi-Fi to a computer that is remotely connected to a company intranet. This is because the network that the PC connected to the company intranet using VPN or similar application is logically different from the network to which your ScanSnap connects at home.
In that case, please connect the ScanSnap using a USB cable.