Why is my printer cannot print after I re-fill the ink in the tank?

@artefil There is no resetter for the WIC on this model, nor chipped tanks. This model uses a NVRAM flag for the waste ink counter. The later ET models have a chipped pad, none of the early models ever did as Epson retrofitted them and disabled the chip detection. You need to use WIC reset or find the leaked Epson internal tools. I downvoted your answer due to severe errors and a refusal to correct them.

The ET-L series is an early model before Epson switched them to a serviceable waste ink pad they refer to as the maintenance box, which is just a swappable waste ink tank with a chip. These older models use an NVRAM counter that counts from the motherboard level rather than the chip found on "maintenance box" models. The only way to reset the waste ink counter is to use a tool like the WIC reset tool or the leaked Epson programs when it occurs, but that's less common these days, and WIC reset is the only option. Epson either sealed the leakers or went to the cloud to mitigate leaks in the program. If the paper and ink lights are cycling, the issue is with the waste ink pad counter, not the ink levels.

If you want to be sure, the trial will let you check the counter percentage in NVRAM, so you'll know for sure. That's usually the issue with many modern Epson machines with the reduced waste ink pad design since 2010.