Is the proxy server configured correctly?
If you connect to the Internet via a proxy server, check if the proxy server information is correct in the network settings of your computer.
Is the ScanSnap connected to the network?
If the ScanSnap is connected to the network via Wi-Fi, check the following:
Check the status and settings of your network environment.
Turn on the wireless access point.
After checking the above, close the feed guide to turn off the ScanSnap and then open the feed guide to turn it back on, and check if the problem is solved.
If the problem still persists, connect the computer and the ScanSnap using a USB cable.