The issue may be caused by the following:

• The ScanSnap is turned off.

• The remaining battery power is low.

• The ScanSnap is connected to a different wireless access point.

  If the Wi-Fi indicator is lit in blue, the ScanSnap may be connected to a different wireless access point.

• The ScanSnap settings have been changed.

  The SSID of the ScanSnap may have been changed, or the SSID notification may be disabled.

• When the ScanSnap is turned off

  Turn on the ScanSnap by holding down the [Scan/Stop] button on the ScanSnap.

• When the remaining battery power is low

  If the [Scan/Stop] button does not light up in blue even when the power is on, the remaining battery may be low. Charge the battery by connecting the ScanSnap to the computer using a USB cable.

• When the ScanSnap is connected to a different wireless access point

  Perform the following:

  1. Turn off the ScanSnap.

  2. Turn on the ScanSnap by holding down the [Scan/Stop] button on the ScanSnap.

• When the ScanSnap settings have been changed

  Start the ScanSnap Wireless Setup Tool on your computer, and check the current SSID and SSID notification settings in [Direct connection setting]. If the SSID notification setting has been disabled, enable it and then continue the setup in the ScanSnap Cloud application.

  For details, refer to the ScanSnap Wireless Setup Tool Help.

  HINT

  When using ScanSnap Home, start the ScanSnap Wireless Setup Tool from the preferences window of ScanSnap Home.

  For details, refer to here in the ScanSnap Help.