My Facebook account changed from jeremy2804 to jeremy121212 How can tis happen ? And i dont get a password reset mail.
The best thing you can do is send an e-mail to NL.email@example.com. Explain your situation and provide the managernames of both accounts.
Also: Please note that having more than one account is against the OSM terms http://www.onlinesoccermanager.nl/Terms
"It's fine to celebrate success but it is more important to heed the lessons of failure." -- Bill Gates