Hii my name is Luna Falon i am from the technical team if you are facing a problem then you can visit our site. If your Epson ink cartridge issue is not recognized by the printer, there could be several reasons behind the issue. Firstly, ensure you have installed the correct cartridge model for your printer. Verify that the cartridge is securely inserted into the designated slot. Sometimes, dirty or damaged contacts on the cartridge or printer can cause recognition problems. Additionally, outdated printer firmware might hinder recognition, so consider updating the printer's firmware to the latest version. If the problem persists, try restarting the printer.