Hello, I am Sheldon and I am an Epson customer executive. For any problem regarding your Epson printer you can contact here or visit our website.

To fix error of Epson printer offline turn off your printer and  unplug all the wires and remove the  cartridges.Clean the cartridge and printer head with a refresher. Wait for 5 minutes after cleaning and then plug in all the wires, and set the cartridge again. Now turn on your printer.Your Epson printer offline error  is fixed now.