My hero, Regalia in Katoria, began fishing before server crashed. I logged back in later and I could not find her - no flag showing on the map, and when I clicked on the icon to create a flag, I got the messge "to start adventures here you must bring your hero". The fishing net was showing at her last known location, and when I clicked on the net I was awarded a fish. Still no hero, however.
I logged out all the way and back in from the game icon on my desktop. Still no hero.