Several of my characters have been deleted from Online Play

I was playing last night about 2 AM Eastern Time. I logged back in today 3/12 at roughly 1:15 PM Eastern Time and most of my online characters (all but one) are gone. They don’t populate in the character list. Specifically I think it was my sentinel (Garena) and my rogue (windforce). My mage is still there… but I was playing my sentinel last night and he’s my main. I’d like to have him back… Any help is appreciated.