You can check if you already have a Football Account by trying to create a new one here: https://account.footballnetwork.com.au/register
You can only create one Football Account for each email address or social media account. So if you try to register with the same email address you will be prevented from creating another football account
If you have just forgotten your password you can reset your password via this link => https://account.footballnetwork.com.au/reset-password