So what happemed is at first PS4 Online services were globally interrupted. Nothing exclusive to ESO.
Eventually PSN issues were resolved as I signed back in to ESO for 30min afterward.... so I could lose around 16K stones to The Screeching Matron who animation cancelled three heavy attacks without cooldown to kill me (first time for everything I guess -_-).
PSN is fine now. However, ESO has decided to manually shut down their PS4 NA server in response to the PSN issue for "maintenance". Now we can't play ESO solely due to ZOS. They are closing the servers right now as a response to a fixed issue with PSN. *sigh*
If you somehow can't notice the red notice...
"In response to the ongoing issue, the North American PlayStation®4 megaserver will be taken offline for maintenance."