I have a similar issue. My main account i no longer can access the in game characters but i can access my arc account. my main account was made long before arc even came out and i dont remember my password for it.
Both the email for my main account and my arc account are the same but the passwords are not.
I was wondering if there is any way to get it back, i know the username the characters on the account with their levels.
Please get back to me as soon as possible :'(