Cartridges not being recognised
This applies to Epson and Canon more than any other brands and more often when the cartridge has a CHIP. As a general rule, cartridges (especially Epson) need to be used as a full set in order to avoid problems which can happen when there is a combination of compatible and remanufactured cartridges. When fitting compatible cartridges for the first time, remove all the cartridges and turn the printer off. Turn it back on and then fit the full set of compatible inks without using originals
We know that some of the originals that you remove may not yet be empty but in the long time it will save you a lot of money. After fitting the new cartridges run the cleaning process to give the desired results and remember that you will only have to go through this process the first time you use compatibles.