Ormael13

I looked for approtiate place and looks like this would be good. Almost two years ago I create account on AFF and upload story. Now when I came back to add new chapters I couldn't log in. I can't find anywhere on my comp my previously used username and password (which I don't write down anywhere just remember it and have in registration e-mail that vanish somewhere). Now I create another account and soon I'll upload that story again under my new penname (almost identical to previous). But then someone could find out that someone else already upload it and report my second upload of story as plagiarism. So is there anythink I can do to not been acused of plagiarism? I'll never log on my previous account and will only add stories from my current. My first account penname is Cezar-Ormael. My current used penname is Cezar_Ormael.