I have an Epson (not eco tank) and it has this. It is called a maintenance box. But you can get one off Amazon etc for a few dollars and it is easy to replace, just one screw off the front. The display literally shows you how to do it!

I love my Epson. I use generic cartridges and they work fine. When you install a generic cartridge it gives you a warning, and that’s it. I have it on wifi but I have disabled firmware updates in the settings.