When using the Scan to Cloud feature, see the troubleshooting page on the Epson Connect website for details.
https://www.epsonconnect.com/ > Learn More on the Scan to Cloud feature > Contents pull down list > Troubleshooting for Epson Connect Services > Scan to Cloud feature
Make sure you enter the correct information when you login.
Make sure the service is running. The service may be down due to system maintenance. Check the accounting service website for more detailed information.