Since it charges fine on other chargers and the eoMini works with your Model Y it sounds like a handshake issue between the e-Niro and the eoMini and not a hardware failure. Some Kia e-Niro owners have had intermittent compatibility issues with certain home chargers usually due to software...
I had an Indra charger installed a couple of days ago, and everything seemed fine, until this morning. The charge plug wouldn’t release because the car was still charging, even after reaching the target percentage.
I set the Indra app to finish charging by 6 AM and set a target charge...