You can manually force the ink cover up. It will unlock.
Most likely an OEM chip is miss-aligned or backwards) or a control chip is lifted up a bit. This can make the “No Maintenance Tank” error happen. It could be a problem OEM chip as wel.
Procedure. Take your OEM chips and put them back onto the Epson chips. Put these back into the printer and make sure everything is ok. Then replace 1 cartridge at a time from left to right verifying that the printer turns on a pressurizes each time.